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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-02-04 15:19:18 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-02-04 15:19:18 +0000 |
| commit | 4969310052f45b1e2e5d21735e38641a20be0e21 (patch) | |
| tree | 04e90cfba49332cd63f2bb6fbf495761d54f5a5c /test/CodeGen/X86/blend-msb.ll | |
| parent | 17174e59004d4df12f9037f0dc99ae530d71eab9 (diff) | |
| download | llvm-4969310052f45b1e2e5d21735e38641a20be0e21.tar.gz llvm-4969310052f45b1e2e5d21735e38641a20be0e21.tar.bz2 llvm-4969310052f45b1e2e5d21735e38641a20be0e21.tar.xz | |
SelectionDAG: Teach FoldConstantArithmetic how to deal with vectors.
This required disabling a PowerPC optimization that did the following:
input:
x = BUILD_VECTOR <i32 16, i32 16, i32 16, i32 16>
lowered to:
tmp = BUILD_VECTOR <i32 8, i32 8, i32 8, i32 8>
x = ADD tmp, tmp
The add now gets folded immediately and we're back at the BUILD_VECTOR we
started from. I don't see a way to fix this currently so I left it disabled
for now.
Fix some trivially foldable X86 tests too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174325 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/blend-msb.ll')
| -rw-r--r-- | test/CodeGen/X86/blend-msb.ll | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/test/CodeGen/X86/blend-msb.ll b/test/CodeGen/X86/blend-msb.ll index 34445428ea..2b6b9ef8f3 100644 --- a/test/CodeGen/X86/blend-msb.ll +++ b/test/CodeGen/X86/blend-msb.ll @@ -5,7 +5,8 @@ ; shifting the needed bit to the MSB, and not using shl+sra. ;CHECK: vsel_float -;CHECK: pslld +;CHECK: movl $-2147483648 +;CHECK-NEXT: movd ;CHECK-NEXT: blendvps ;CHECK: ret define <4 x float> @vsel_float(<4 x float> %v1, <4 x float> %v2) { @@ -14,7 +15,8 @@ define <4 x float> @vsel_float(<4 x float> %v1, <4 x float> %v2) { } ;CHECK: vsel_4xi8 -;CHECK: pslld +;CHECK: movl $-2147483648 +;CHECK-NEXT: movd ;CHECK-NEXT: blendvps ;CHECK: ret define <4 x i8> @vsel_4xi8(<4 x i8> %v1, <4 x i8> %v2) { |