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| author | Evan Cheng <evan.cheng@apple.com> | 2009-12-09 21:00:30 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-12-09 21:00:30 +0000 |
| commit | c363094e04df621d41ca570eb2a7bf8826bb8c1a (patch) | |
| tree | f471aca10ab30ffc20bb95bc94a18fed3c50357e /lib/Target/X86/X86InstrSSE.td | |
| parent | 89452f7386540ca83e8991e74f1d74bbe7271922 (diff) | |
| download | external_llvm-c363094e04df621d41ca570eb2a7bf8826bb8c1a.zip external_llvm-c363094e04df621d41ca570eb2a7bf8826bb8c1a.tar.gz external_llvm-c363094e04df621d41ca570eb2a7bf8826bb8c1a.tar.bz2 | |
Optimize splat of a scalar load into a shuffle of a vector load when it's legal. e.g.
vector_shuffle (scalar_to_vector (i32 load (ptr + 4))), undef, <0, 0, 0, 0>
=>
vector_shuffle (v4i32 load ptr), undef, <1, 1, 1, 1>
iff ptr is 16-byte aligned (or can be made into 16-byte aligned).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90984 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrSSE.td')
| -rw-r--r-- | lib/Target/X86/X86InstrSSE.td | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index dfdd4ce..62841f8 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -2083,7 +2083,7 @@ def PSHUFDmi : PDIi8<0x70, MRMSrcMem, (outs VR128:$dst), (ins i128mem:$src1, i8imm:$src2), "pshufd\t{$src2, $src1, $dst|$dst, $src1, $src2}", [(set VR128:$dst, (v4i32 (pshufd:$src2 - (bc_v4i32(memopv2i64 addr:$src1)), + (bc_v4i32 (memopv2i64 addr:$src1)), (undef))))]>; } |