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| author | David Majnemer <david.majnemer@gmail.com> | 2016-06-20 16:03:25 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2016-06-20 16:03:25 +0000 |
| commit | c5601df9fdf0ac84cc95d65e97f7fb3423e844d7 (patch) | |
| tree | 0dd82af2117389f5a87125f980f8d42b6abbf7fe /llvm/test/Transforms/LoopIdiom | |
| parent | 86100fc8bee7d1352e9ebc92cb354b2e938c5e4f (diff) | |
| download | bcm5719-llvm-c5601df9fdf0ac84cc95d65e97f7fb3423e844d7.tar.gz bcm5719-llvm-c5601df9fdf0ac84cc95d65e97f7fb3423e844d7.zip | |
Reapply "[LoopIdiom] Don't remove dead operands manually"
This reverts commit r273160, reapplying r273132.
RecursivelyDeleteTriviallyDeadInstructions cannot be called on a
parentless Instruction.
llvm-svn: 273162
Diffstat (limited to 'llvm/test/Transforms/LoopIdiom')
| -rw-r--r-- | llvm/test/Transforms/LoopIdiom/pr28196.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopIdiom/pr28196.ll b/llvm/test/Transforms/LoopIdiom/pr28196.ll new file mode 100644 index 00000000000..10f49fbcd09 --- /dev/null +++ b/llvm/test/Transforms/LoopIdiom/pr28196.ll @@ -0,0 +1,26 @@ +; RUN: opt -loop-idiom -S < %s | FileCheck %s + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +define void @test1() { +entry: + br label %for.body.preheader + +for.body.preheader: ; preds = %for.cond + br label %for.body + +for.body: ; preds = %for.body, %for.body.preheader + %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] + %add.ptr3 = getelementptr inbounds i32, i32* null, i32 %indvars.iv + %add.ptr4 = getelementptr inbounds i32, i32* %add.ptr3, i32 1 + %0 = load i32, i32* %add.ptr4, align 4 + store i32 %0, i32* %add.ptr3, align 4 + %indvars.iv.next = add nsw i32 %indvars.iv, 1 + %exitcond = icmp ne i32 %indvars.iv.next, 6 + br i1 %exitcond, label %for.body, label %for.body.preheader +} + +; CHECK-LABEL: define void @test1( +; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* null, i8* inttoptr (i64 4 to i8*), i64 24, i32 4, i1 false) +; CHECK-NOT: store |
