169 lines
8.1 KiB
LLVM
169 lines
8.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -passes=loop-interchange -cache-line-size=4 -verify-dom-info -verify-loop-info -verify-scev -verify-loop-lcssa -S | FileCheck %s
|
|
|
|
; Make sure the loops are in LCSSA form after loop interchange,
|
|
; and loop interchange does not hit assertion errors and crash.
|
|
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@b = external global [512 x [4 x i32]], align 1
|
|
@c = external global [2 x [4 x i32]], align 1
|
|
|
|
define void @test1() {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER_PREHEADER:%.*]]
|
|
; CHECK: for.cond33.preheader.preheader:
|
|
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER:%.*]]
|
|
; CHECK: for.cond33.preheader:
|
|
; CHECK-NEXT: [[I_011:%.*]] = phi i16 [ [[INC69:%.*]], [[FOR_END67:%.*]] ], [ 0, [[FOR_COND33_PREHEADER_PREHEADER:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_BODY42_SPLIT1:%.*]]
|
|
; CHECK: for.body42.preheader:
|
|
; CHECK-NEXT: br label [[FOR_BODY42:%.*]]
|
|
; CHECK: for.cond37.preheader.preheader:
|
|
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER:%.*]]
|
|
; CHECK: for.cond37.preheader:
|
|
; CHECK-NEXT: [[J_010:%.*]] = phi i16 [ [[INC66:%.*]], [[FOR_END64:%.*]] ], [ 0, [[FOR_COND37_PREHEADER_PREHEADER]] ]
|
|
; CHECK-NEXT: br label [[FOR_BODY42_PREHEADER:%.*]]
|
|
; CHECK: for.body42:
|
|
; CHECK-NEXT: [[K_09:%.*]] = phi i16 [ [[TMP1:%.*]], [[FOR_BODY42_SPLIT:%.*]] ], [ -512, [[FOR_BODY42_PREHEADER]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER_PREHEADER]]
|
|
; CHECK: for.body42.split1:
|
|
; CHECK-NEXT: [[SUB51:%.*]] = add nsw i16 [[K_09]], 512
|
|
; CHECK-NEXT: [[ARRAYIDX55:%.*]] = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 [[SUB51]], i16 [[J_010]]
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX55]], align 1
|
|
; CHECK-NEXT: [[ADD61:%.*]] = add i32 undef, undef
|
|
; CHECK-NEXT: [[INC63:%.*]] = add nsw i16 [[K_09]], 1
|
|
; CHECK-NEXT: br label [[FOR_END67]]
|
|
; CHECK: for.body42.split:
|
|
; CHECK-NEXT: [[ADD61_LCSSA:%.*]] = phi i32 [ [[ADD61]], [[FOR_END67]] ]
|
|
; CHECK-NEXT: [[TMP1]] = add nsw i16 [[K_09]], 1
|
|
; CHECK-NEXT: br i1 true, label [[FOR_END64]], label [[FOR_BODY42]]
|
|
; CHECK: for.end64:
|
|
; CHECK-NEXT: [[ADD61_LCSSA_LCSSA:%.*]] = phi i32 [ [[ADD61_LCSSA]], [[FOR_BODY42_SPLIT]] ]
|
|
; CHECK-NEXT: store i32 [[ADD61_LCSSA_LCSSA]], ptr undef, align 1
|
|
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_010]], 1
|
|
; CHECK-NEXT: br i1 true, label [[FOR_COND75_PREHEADER:%.*]], label [[FOR_COND37_PREHEADER]]
|
|
; CHECK: for.end67:
|
|
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_011]], 1
|
|
; CHECK-NEXT: [[EXITCOND13_NOT:%.*]] = icmp eq i16 [[INC69]], 2
|
|
; CHECK-NEXT: br i1 [[EXITCOND13_NOT]], label [[FOR_BODY42_SPLIT]], label [[FOR_COND33_PREHEADER]]
|
|
; CHECK: for.cond75.preheader:
|
|
; CHECK-NEXT: br label [[FOR_COND75:%.*]]
|
|
; CHECK: for.cond75:
|
|
; CHECK-NEXT: br label [[FOR_COND75]]
|
|
;
|
|
entry:
|
|
br label %for.cond33.preheader
|
|
|
|
for.cond33.preheader: ; preds = %for.end67, %entry
|
|
%i.011 = phi i16 [ 0, %entry ], [ %inc69, %for.end67 ]
|
|
br label %for.cond37.preheader
|
|
|
|
for.cond37.preheader: ; preds = %for.end64, %for.cond33.preheader
|
|
%j.010 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %for.end64 ]
|
|
br label %for.body42
|
|
|
|
for.body42: ; preds = %for.body42, %for.cond37.preheader
|
|
%k.09 = phi i16 [ -512, %for.cond37.preheader ], [ %inc63, %for.body42 ]
|
|
%sub51 = add nsw i16 %k.09, 512
|
|
%arrayidx55 = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 %sub51, i16 %j.010
|
|
%0 = load i32, ptr %arrayidx55, align 1
|
|
%add61 = add i32 undef, undef
|
|
%inc63 = add nsw i16 %k.09, 1
|
|
br i1 true, label %for.end64, label %for.body42
|
|
|
|
for.end64: ; preds = %for.body42
|
|
store i32 %add61, ptr undef, align 1
|
|
%inc66 = add nuw nsw i16 %j.010, 1
|
|
br i1 true, label %for.end67, label %for.cond37.preheader
|
|
|
|
for.end67: ; preds = %for.end64
|
|
%inc69 = add nuw nsw i16 %i.011, 1
|
|
%exitcond13.not = icmp eq i16 %inc69, 2
|
|
br i1 %exitcond13.not, label %for.cond75, label %for.cond33.preheader
|
|
|
|
for.cond75: ; preds = %for.cond75, %for.end67
|
|
br label %for.cond75
|
|
}
|
|
|
|
|
|
; Make sure that we split the phi nodes in the middle loop header
|
|
; into a separate basic block to avoid the situation where use of
|
|
; the outermost indvar appears before its def after interchanging
|
|
; the outermost and the middle loop. Otherwise loop interchange
|
|
; would crash.
|
|
|
|
define void @test2() {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER_PREHEADER:%.*]]
|
|
; CHECK: for.cond33.preheader.preheader:
|
|
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER:%.*]]
|
|
; CHECK: for.cond33.preheader:
|
|
; CHECK-NEXT: [[I_166:%.*]] = phi i16 [ [[INC69:%.*]], [[FOR_INC68:%.*]] ], [ 0, [[FOR_COND33_PREHEADER_PREHEADER:%.*]] ]
|
|
; CHECK-NEXT: [[ARRAYIDX60:%.*]] = getelementptr inbounds [2 x [4 x i32]], ptr @c, i16 0, i16 [[I_166]], i16 [[J_165:%.*]]
|
|
; CHECK-NEXT: br label [[VECTOR_BODY85_SPLIT1:%.*]]
|
|
; CHECK: for.cond37.preheader.preheader:
|
|
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER:%.*]]
|
|
; CHECK: for.cond37.preheader:
|
|
; CHECK-NEXT: [[J_165]] = phi i16 [ [[INC66:%.*]], [[MIDDLE_BLOCK80:%.*]] ], [ 0, [[FOR_COND37_PREHEADER_PREHEADER]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND37_PREHEADER_SPLIT:%.*]]
|
|
; CHECK: for.cond37.preheader.split:
|
|
; CHECK-NEXT: br label [[VECTOR_BODY85:%.*]]
|
|
; CHECK: vector.body85:
|
|
; CHECK-NEXT: [[INDEX86:%.*]] = phi i16 [ 0, [[FOR_COND37_PREHEADER_SPLIT]] ], [ [[TMP3:%.*]], [[VECTOR_BODY85_SPLIT:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND33_PREHEADER_PREHEADER]]
|
|
; CHECK: vector.body85.split1:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = or i16 [[INDEX86]], 2
|
|
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 [[TMP0]], i16 [[J_165]]
|
|
; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 1
|
|
; CHECK-NEXT: [[INDEX_NEXT87:%.*]] = add nuw i16 [[INDEX86]], 4
|
|
; CHECK-NEXT: br label [[FOR_INC68]]
|
|
; CHECK: vector.body85.split:
|
|
; CHECK-NEXT: [[TMP3]] = add nuw i16 [[INDEX86]], 4
|
|
; CHECK-NEXT: br i1 true, label [[MIDDLE_BLOCK80]], label [[VECTOR_BODY85]]
|
|
; CHECK: middle.block80:
|
|
; CHECK-NEXT: [[INC66]] = add nuw nsw i16 [[J_165]], 1
|
|
; CHECK-NEXT: br i1 true, label [[FOR_COND75_PREHEADER:%.*]], label [[FOR_COND37_PREHEADER]]
|
|
; CHECK: for.inc68:
|
|
; CHECK-NEXT: [[INC69]] = add nuw nsw i16 [[I_166]], 1
|
|
; CHECK-NEXT: [[EXITCOND77_NOT:%.*]] = icmp eq i16 [[INC69]], 2
|
|
; CHECK-NEXT: br i1 [[EXITCOND77_NOT]], label [[VECTOR_BODY85_SPLIT]], label [[FOR_COND33_PREHEADER]]
|
|
; CHECK: for.cond75.preheader:
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
br label %for.cond33.preheader
|
|
|
|
for.cond33.preheader: ; preds = %for.inc68, %entry
|
|
%i.166 = phi i16 [ %inc69, %for.inc68 ], [ 0, %entry ]
|
|
br label %for.cond37.preheader
|
|
|
|
for.cond37.preheader: ; preds = %middle.block80, %for.cond33.preheader
|
|
%j.165 = phi i16 [ 0, %for.cond33.preheader ], [ %inc66, %middle.block80 ]
|
|
%arrayidx60 = getelementptr inbounds [2 x [4 x i32]], ptr @c, i16 0, i16 %i.166, i16 %j.165
|
|
br label %vector.body85
|
|
|
|
vector.body85: ; preds = %vector.body85, %for.cond37.preheader
|
|
%index86 = phi i16 [ 0, %for.cond37.preheader ], [ %index.next87, %vector.body85 ]
|
|
%0 = or i16 %index86, 2
|
|
%1 = getelementptr inbounds [512 x [4 x i32]], ptr @b, i16 0, i16 %0, i16 %j.165
|
|
%2 = load i32, ptr %1, align 1
|
|
%index.next87 = add nuw i16 %index86, 4
|
|
br i1 undef, label %middle.block80, label %vector.body85
|
|
|
|
middle.block80: ; preds = %vector.body85
|
|
%inc66 = add nuw nsw i16 %j.165, 1
|
|
br i1 undef, label %for.inc68, label %for.cond37.preheader
|
|
|
|
for.inc68: ; preds = %middle.block80
|
|
%inc69 = add nuw nsw i16 %i.166, 1
|
|
%exitcond77.not = icmp eq i16 %inc69, 2
|
|
br i1 %exitcond77.not, label %for.cond75.preheader, label %for.cond33.preheader
|
|
|
|
for.cond75.preheader: ; preds = %for.inc68
|
|
unreachable
|
|
}
|
|
|