forked from OSchip/llvm-project
433 lines
19 KiB
LLVM
433 lines
19 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
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; RUN: opt -passes='print<scalar-evolution>' -disable-output %s 2>&1 | FileCheck %s
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; Tests for PR47904.
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define void @test_trip_multiple_4(i32 %num) {
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; CHECK-LABEL: 'test_trip_multiple_4'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-2147483648) S: [0,-2147483648) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 4
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp uge i32 %num, 4
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_ugt_5(i32 %num) {
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; CHECK-LABEL: 'test_trip_multiple_4_ugt_5'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_ugt_5
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-2147483648) S: [0,-2147483648) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_ugt_5
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 4
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp ugt i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_ugt_5_order_swapped(i32 %num) {
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; TODO: Trip multiple can be 4, it is missed due to the processing order of the assumes.
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; CHECK-LABEL: 'test_trip_multiple_4_ugt_5_order_swapped'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_ugt_5_order_swapped
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-2147483648) S: [0,-2147483648) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_ugt_5_order_swapped
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 2
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;
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entry:
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%u = urem i32 %num, 4
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%cmp.1 = icmp ugt i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_sgt_5(i32 %num) {
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; CHECK-LABEL: 'test_trip_multiple_4_sgt_5'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_sgt_5
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,2147483647) S: [0,2147483647) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_sgt_5
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is 2147483646
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 4
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp sgt i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp slt i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_sgt_5_order_swapped(i32 %num) {
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; TODO: Trip multiple can be 4, it is missed due to the processing order of the assumes.
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; CHECK-LABEL: 'test_trip_multiple_4_sgt_5_order_swapped'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_sgt_5_order_swapped
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,2147483647) S: [0,2147483647) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_sgt_5_order_swapped
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is 2147483646
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 2
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;
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entry:
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%u = urem i32 %num, 4
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%cmp.1 = icmp sgt i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp slt i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_uge_5(i32 %num) {
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; CHECK-LABEL: 'test_trip_multiple_4_uge_5'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_uge_5
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-2147483648) S: [0,-2147483648) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_uge_5
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 4
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp uge i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_uge_5_order_swapped(i32 %num) {
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; TODO: Trip multiple can be 4, it is missed due to the processing order of the assumes.
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; CHECK-LABEL: 'test_trip_multiple_4_uge_5_order_swapped'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_uge_5_order_swapped
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-2147483648) S: [0,-2147483648) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_uge_5_order_swapped
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 1
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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%cmp.1 = icmp uge i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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tail call void @llvm.assume(i1 %cmp)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_sge_5(i32 %num) {
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; TODO: Trip multiple can be 4, it is missed due to the processing order of the assumes.
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; CHECK-LABEL: 'test_trip_multiple_4_sge_5'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_sge_5
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,2147483647) S: [0,2147483647) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_sge_5
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is 2147483646
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 4
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp sge i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp slt i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_4_sge_5_order_swapped(i32 %num) {
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; CHECK-LABEL: 'test_trip_multiple_4_sge_5_order_swapped'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_sge_5_order_swapped
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,2147483647) S: [0,2147483647) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_sge_5_order_swapped
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is 2147483646
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 1
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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%cmp.1 = icmp sge i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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tail call void @llvm.assume(i1 %cmp)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp slt i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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; Same as @test_trip_multiple_4 but with the icmp operands swapped.
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define void @test_trip_multiple_4_icmp_ops_swapped(i32 %num) {
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; CHECK-LABEL: 'test_trip_multiple_4_icmp_ops_swapped'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_4_icmp_ops_swapped
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; CHECK-NEXT: %u = urem i32 %num, 4
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; CHECK-NEXT: --> (zext i2 (trunc i32 %num to i2) to i32) U: [0,4) S: [0,4)
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-2147483648) S: [0,-2147483648) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_4_icmp_ops_swapped
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 4
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 0, %u
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp uge i32 %num, 4
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_5(i32 %num) {
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; CHECK-LABEL: 'test_trip_multiple_5'
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; CHECK-NEXT: Classifying expressions for: @test_trip_multiple_5
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; CHECK-NEXT: %u = urem i32 %num, 5
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; CHECK-NEXT: --> ((-5 * (%num /u 5)) + %num) U: full-set S: full-set
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; CHECK-NEXT: %i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-2147483648) S: [0,-2147483648) Exits: (-1 + %num) LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: %inc = add nuw nsw i32 %i.010, 1
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-2147483648) S: [1,-2147483648) Exits: %num LoopDispositions: { %for.body: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_trip_multiple_5
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Predicates:
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; CHECK: Loop %for.body: Trip multiple is 1
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|
;
|
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entry:
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%u = urem i32 %num, 5
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp uge i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
|
|
|
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
|
|
br i1 %cmp2, label %for.body, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
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define void @test_trunc_operand_larger_than_urem_expr(i64 %N) {
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; CHECK-LABEL: 'test_trunc_operand_larger_than_urem_expr'
|
|
; CHECK-NEXT: Classifying expressions for: @test_trunc_operand_larger_than_urem_expr
|
|
; CHECK-NEXT: %conv = trunc i64 %N to i32
|
|
; CHECK-NEXT: --> (trunc i64 %N to i32) U: full-set S: full-set
|
|
; CHECK-NEXT: %and = and i32 %conv, 1
|
|
; CHECK-NEXT: --> (zext i1 (trunc i64 %N to i1) to i32) U: [0,2) S: [0,2)
|
|
; CHECK-NEXT: %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
|
|
; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,-9223372036854775808) S: [0,-9223372036854775808) Exits: (-1 + %N) LoopDispositions: { %for.body: Computable }
|
|
; CHECK-NEXT: %iv.next = add nuw nsw i64 %iv, 1
|
|
; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%for.body> U: [1,-9223372036854775808) S: [1,-9223372036854775808) Exits: %N LoopDispositions: { %for.body: Computable }
|
|
; CHECK-NEXT: Determining loop execution counts for: @test_trunc_operand_larger_than_urem_expr
|
|
; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %N)
|
|
; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is -1
|
|
; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %N)
|
|
; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %N)
|
|
; CHECK-NEXT: Predicates:
|
|
; CHECK: Loop %for.body: Trip multiple is 1
|
|
;
|
|
entry:
|
|
%conv = trunc i64 %N to i32
|
|
%and = and i32 %conv, 1
|
|
%cmp.pre = icmp eq i32 %and, 0
|
|
br i1 %cmp.pre, label %for.body, label %exit
|
|
|
|
for.body:
|
|
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
|
|
%iv.next = add nuw nsw i64 %iv, 1
|
|
%cmp.1 = icmp ne i64 %iv.next, %N
|
|
br i1 %cmp.1, label %for.body, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.assume(i1)
|