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| author | Jakub Staszak <kubastaszak@gmail.com> | 2012-10-29 21:56:35 +0000 |
|---|---|---|
| committer | Jakub Staszak <kubastaszak@gmail.com> | 2012-10-29 21:56:35 +0000 |
| commit | 6d317824a5e8b4c5d8dc18e9e2ec365e5a1b515e (patch) | |
| tree | c6d6a42eac87bc7a3fac3a9a3186a8f225686be7 /test/CodeGen | |
| parent | 369ff7b740c154dc4357c6d063f4957498a1e7b9 (diff) | |
| download | external_llvm-6d317824a5e8b4c5d8dc18e9e2ec365e5a1b515e.zip external_llvm-6d317824a5e8b4c5d8dc18e9e2ec365e5a1b515e.tar.gz external_llvm-6d317824a5e8b4c5d8dc18e9e2ec365e5a1b515e.tar.bz2 | |
Allow to fold vector load if there is more than one bitcast, so in the case:
%0 = load <8 x i16>* %dest
%1 = shufflevector <8 x i16> %0, <8 x i16> %in,
<8 x i32> < i32 0, i32 1, i32 2, i32 3, i32 13, i32 undef, i32 14, i32 14>
store <8 x i16> %1, <8 x i16>* %dest
We get:
vmovlpd (%eax), %xmm0, %xmm0
instead of:
vmovaps (%eax), %xmm1
vmovsd %xmm1, %xmm0, %xmm0
No extra test-case is added. I just fixed the existing one
(also it uses FileCheck now).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166971 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/vec_shuffle-30.ll | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/test/CodeGen/X86/vec_shuffle-30.ll b/test/CodeGen/X86/vec_shuffle-30.ll index 1651c4c..3ae3b35 100644 --- a/test/CodeGen/X86/vec_shuffle-30.ll +++ b/test/CodeGen/X86/vec_shuffle-30.ll @@ -1,21 +1,25 @@ -; RUN: llc < %s -march=x86 -mattr=sse41 -o %t -; RUN: grep pshufhw %t | grep -- -95 | count 1 -; RUN: grep shufps %t | count 1 -; RUN: not grep pslldq %t +; RUN: llc < %s -march=x86 -mattr=sse41 | FileCheck %s +; CHECK: test ; Test case when creating pshufhw, we incorrectly set the higher order bit ; for an undef, define void @test(<8 x i16>* %dest, <8 x i16> %in) nounwind { entry: +; CHECK-NOT: vmovaps +; CHECK: vmovlpd +; CHECK: vpshufhw $-95 %0 = load <8 x i16>* %dest %1 = shufflevector <8 x i16> %0, <8 x i16> %in, <8 x i32> < i32 0, i32 1, i32 2, i32 3, i32 13, i32 undef, i32 14, i32 14> store <8 x i16> %1, <8 x i16>* %dest ret void -} +} +; CHECK: test2 ; A test case where we shouldn't generate a punpckldq but a pshufd and a pslldq define void @test2(<4 x i32>* %dest, <4 x i32> %in) nounwind { entry: +; CHECK-NOT: pslldq +; CHECK: shufps %0 = shufflevector <4 x i32> %in, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> < i32 undef, i32 5, i32 undef, i32 2> store <4 x i32> %0, <4 x i32>* %dest ret void |