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| author | Eli Friedman <eli.friedman@gmail.com> | 2009-06-06 04:17:04 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2009-06-06 04:17:04 +0000 |
| commit | 1762c1439e5e9e55880e6e938a74e14e3783de66 (patch) | |
| tree | 39bdacc3c965136caa2d4dc203ab35a27d8f1969 | |
| parent | 23ef1055808c2bcf5aa29d63b87f5d3aa5da5992 (diff) | |
| download | external_llvm-1762c1439e5e9e55880e6e938a74e14e3783de66.zip external_llvm-1762c1439e5e9e55880e6e938a74e14e3783de66.tar.gz external_llvm-1762c1439e5e9e55880e6e938a74e14e3783de66.tar.bz2 | |
Get rid of a bogus pattern that interferes with optimization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72985 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86InstrMMX.td | 7 | ||||
| -rw-r--r-- | test/CodeGen/X86/2009-06-05-ScalarToVectorByteMMX.ll | 7 |
2 files changed, 7 insertions, 7 deletions
diff --git a/lib/Target/X86/X86InstrMMX.td b/lib/Target/X86/X86InstrMMX.td index 8f287e1..38c5471 100644 --- a/lib/Target/X86/X86InstrMMX.td +++ b/lib/Target/X86/X86InstrMMX.td @@ -605,13 +605,6 @@ let AddedComplexity = 15 in { (MMX_PUNPCKLDQrr VR64:$src, (MMX_V_SET0))>; } -// Scalar to v4i16 / v8i8. The source may be a GR32, but only the lower -// 8 or 16-bits matter. -def : Pat<(bc_v8i8 (v2i32 (scalar_to_vector GR32:$src))), - (MMX_MOVD64rr GR32:$src)>; -def : Pat<(bc_v4i16 (v2i32 (scalar_to_vector GR32:$src))), - (MMX_MOVD64rr GR32:$src)>; - // Patterns to perform canonical versions of vector shuffling. let AddedComplexity = 10 in { def : Pat<(v8i8 (mmx_unpckl_undef VR64:$src, (undef))), diff --git a/test/CodeGen/X86/2009-06-05-ScalarToVectorByteMMX.ll b/test/CodeGen/X86/2009-06-05-ScalarToVectorByteMMX.ll new file mode 100644 index 0000000..94df530 --- /dev/null +++ b/test/CodeGen/X86/2009-06-05-ScalarToVectorByteMMX.ll @@ -0,0 +1,7 @@ +; RUN: llvm-as < %s | llc -march=x86 -mattr=+mmx | not grep movl + +define <8 x i8> @a(i8 zeroext %x) nounwind { + %r = insertelement <8 x i8> undef, i8 %x, i32 0 + ret <8 x i8> %r +} + |