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| author | Tim Northover <tnorthover@apple.com> | 2017-04-20 19:54:02 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2017-04-20 19:54:02 +0000 |
| commit | 8b1240b0f09d53863cb298c7519508ddead3c957 (patch) | |
| tree | 1cac9a03fa15e5a1c881534db5a93e0cf571cdd3 /llvm/test/Transforms/LoopStrengthReduce/ARM | |
| parent | 175d70ee5c2f03f640151488f5f33b7bd9b96f8d (diff) | |
| download | bcm5719-llvm-8b1240b0f09d53863cb298c7519508ddead3c957.tar.gz bcm5719-llvm-8b1240b0f09d53863cb298c7519508ddead3c957.zip | |
ARM: handle post-indexed NEON ops where the offset isn't the access width.
Before, we assumed that any ConstantInt offset was precisely the access width,
so we could use the "[rN]!" form. ISelLowering only ever created that kind, but
further simplification during combining could lead to unexpected constants and
incorrect codegen.
Should fix PR32658.
llvm-svn: 300878
Diffstat (limited to 'llvm/test/Transforms/LoopStrengthReduce/ARM')
| -rw-r--r-- | llvm/test/Transforms/LoopStrengthReduce/ARM/ivchain-ARM.ll | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/llvm/test/Transforms/LoopStrengthReduce/ARM/ivchain-ARM.ll b/llvm/test/Transforms/LoopStrengthReduce/ARM/ivchain-ARM.ll index a9d1e875876..728f5dcac7b 100644 --- a/llvm/test/Transforms/LoopStrengthReduce/ARM/ivchain-ARM.ll +++ b/llvm/test/Transforms/LoopStrengthReduce/ARM/ivchain-ARM.ll @@ -198,7 +198,7 @@ for.end: ; preds = %for.body ; @testNeon is an important example of the nead for ivchains. ; -; Currently we have three extra add.w's that keep the store address +; Currently we have two extra add.w's that keep the store address ; live past the next increment because ISEL is unfortunately undoing ; the store chain. ISEL also fails to convert all but one of the stores to ; post-increment addressing. However, the loads should use @@ -207,12 +207,10 @@ for.end: ; preds = %for.body ; ; A9: testNeon: ; A9: %.lr.ph -; A9-NOT: lsl.w -; A9-NOT: {{ldr|str|adds|add r}} -; A9: vst1.8 {{.*}} [r{{[0-9]+}}]! -; A9-NOT: {{ldr|str|adds|add r}} ; A9: add.w r +; A9-NOT: lsl.w ; A9-NOT: {{ldr|str|adds|add r}} +; A9: vst1.8 {{.*}} [r{{[0-9]+}}], r{{[0-9]+}} ; A9: add.w r ; A9-NOT: {{ldr|str|adds|add r}} ; A9-NOT: add.w r |
