forked from OSchip/llvm-project
54 lines
1.7 KiB
LLVM
54 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes='loop(indvars,loop-deletion,loop-unroll-full),verify<scalar-evolution>' -S %s | FileCheck %s
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define void @test(i1 %c.0, ptr %A) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C_0:%.*]], label [[LOOP_1_HEADER_PREHEADER:%.*]], label [[OUTER_HEADER_PREHEADER:%.*]]
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; CHECK: outer.header.preheader:
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; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
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; CHECK: loop.1.header.preheader:
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; CHECK-NEXT: br label [[LOOP_1_HEADER:%.*]]
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; CHECK: loop.1.header:
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; CHECK-NEXT: store i32 0, ptr [[A:%.*]], align 4
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; CHECK-NEXT: br label [[LOOP_1_LATCH:%.*]]
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; CHECK: loop.1.latch:
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; CHECK-NEXT: store i32 0, ptr [[A]], align 4
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; CHECK-NEXT: br label [[LOOP_1_LATCH_1:%.*]]
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; CHECK: loop.1.latch.1:
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; CHECK-NEXT: ret void
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; CHECK: outer.header.loopexit:
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; CHECK-NEXT: br label [[OUTER_HEADER]]
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; CHECK: outer.header:
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; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[A]], align 4
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; CHECK-NEXT: br label [[OUTER_HEADER_LOOPEXIT:%.*]]
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;
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entry:
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br i1 %c.0, label %loop.1.header, label %outer.header
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loop.1.header:
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%iv.1 = phi i32 [ 0, %entry ], [ 1, %loop.1.latch ]
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store i32 0, ptr %A, align 4
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br label %loop.1.latch
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loop.1.latch:
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%cmp.1 = icmp eq i32 %iv.1, 0
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br i1 %cmp.1, label %loop.1.header, label %exit
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outer.header:
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%l = load i32, ptr %A, align 4
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br label %inner.header
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inner.header:
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%iv.2 = phi i32 [ 0, %outer.header ], [ %iv.2.next, %inner.outer.latch ]
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%cmp.2 = icmp eq i32 %iv.2, %l
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br i1 %cmp.2, label %inner.outer.latch, label %inner.outer.latch
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inner.outer.latch:
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%iv.2.next = add nuw nsw i32 %iv.2, 1
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br i1 false, label %inner.header, label %outer.header
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exit:
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ret void
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}
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