diff options
| author | Nate Begeman <natebegeman@mac.com> | 2009-03-01 23:44:07 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2009-03-01 23:44:07 +0000 |
| commit | cbd88adea66261a2f4372906fe1e08c2093d8718 (patch) | |
| tree | b13fbd9be669309965a23f0a8726ca035e8a93d9 /test/CodeGen/X86/extract-combine.ll | |
| parent | 932af8f8c35c70e22aea165d16d92dbb68a59cf9 (diff) | |
| download | llvm-cbd88adea66261a2f4372906fe1e08c2093d8718.tar.gz llvm-cbd88adea66261a2f4372906fe1e08c2093d8718.tar.bz2 llvm-cbd88adea66261a2f4372906fe1e08c2093d8718.tar.xz | |
Fix a problem with DAGCombine on 64b targets where folding
extracts + build_vector into a shuffle would fail, because the
type of the new build_vector would not be legal. Try harder to
create a legal build_vector type. Note: this will be totally
irrelevant once vector_shuffle no longer takes a build_vector for
shuffle mask.
New:
_foo:
xorps %xmm0, %xmm0
xorps %xmm1, %xmm1
subps %xmm1, %xmm1
mulps %xmm0, %xmm1
addps %xmm0, %xmm1
movaps %xmm1, 0
Old:
_foo:
xorps %xmm0, %xmm0
movss %xmm0, %xmm1
xorps %xmm2, %xmm2
unpcklps %xmm1, %xmm2
pshufd $80, %xmm1, %xmm1
unpcklps %xmm1, %xmm2
pslldq $16, %xmm2
pshufd $57, %xmm2, %xmm1
subps %xmm0, %xmm1
mulps %xmm0, %xmm1
addps %xmm0, %xmm1
movaps %xmm1, 0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65791 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/extract-combine.ll')
| -rw-r--r-- | test/CodeGen/X86/extract-combine.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/extract-combine.ll b/test/CodeGen/X86/extract-combine.ll new file mode 100644 index 0000000000..9172dced05 --- /dev/null +++ b/test/CodeGen/X86/extract-combine.ll @@ -0,0 +1,15 @@ +; RUN: llvm-as < %s | llc -march=x86-64 -mcpu=core2 -o %t -f +; RUN: not grep unpcklps %t + +define i32 @foo() nounwind { +entry: + %tmp74.i25762 = shufflevector <16 x float> zeroinitializer, <16 x float> zeroinitializer, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 18, i32 19> ; <<16 x float>> [#uses=1] + %tmp518 = shufflevector <16 x float> %tmp74.i25762, <16 x float> undef, <4 x i32> <i32 12, i32 13, i32 14, i32 15> ; <<4 x float>> [#uses=1] + %movss.i25611 = shufflevector <4 x float> zeroinitializer, <4 x float> %tmp518, <4 x i32> <i32 4, i32 1, i32 2, i32 3> ; <<4 x float>> [#uses=1] + %conv3.i25615 = shufflevector <4 x float> %movss.i25611, <4 x float> undef, <4 x i32> <i32 1, i32 2, i32 3, i32 0> ; <<4 x float>> [#uses=1] + %sub.i25620 = sub <4 x float> %conv3.i25615, zeroinitializer ; <<4 x float>> [#uses=1] + %mul.i25621 = mul <4 x float> zeroinitializer, %sub.i25620 ; <<4 x float>> [#uses=1] + %add.i25622 = add <4 x float> zeroinitializer, %mul.i25621 ; <<4 x float>> [#uses=1] + store <4 x float> %add.i25622, <4 x float>* null + unreachable +} |