diff options
| author | Dan Gohman <gohman@apple.com> | 2010-06-25 21:05:35 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-06-25 21:05:35 +0000 |
| commit | ca5b8553ea87ccba7eeff5748cb98f4703a55255 (patch) | |
| tree | 0217f14e6cae32e33d09563902c53abbdb71ee08 | |
| parent | ee278437e6cc7a6e3afeddfc947ab68558a9860e (diff) | |
pcmpeqd and friends are Commutable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106886 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86InstrSSE.td | 6 | ||||
| -rw-r--r-- | test/CodeGen/X86/sse-commute.ll | 20 |
2 files changed, 23 insertions, 3 deletions
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index 3a381cfed3..821b817f03 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -2060,9 +2060,9 @@ let Constraints = "$src1 = $dst", ExeDomain = SSEPackedInt in { } // SSE2 Integer comparison -defm PCMPEQB : PDI_binop_rm_int<0x74, "pcmpeqb", int_x86_sse2_pcmpeq_b>; -defm PCMPEQW : PDI_binop_rm_int<0x75, "pcmpeqw", int_x86_sse2_pcmpeq_w>; -defm PCMPEQD : PDI_binop_rm_int<0x76, "pcmpeqd", int_x86_sse2_pcmpeq_d>; +defm PCMPEQB : PDI_binop_rm_int<0x74, "pcmpeqb", int_x86_sse2_pcmpeq_b, 1>; +defm PCMPEQW : PDI_binop_rm_int<0x75, "pcmpeqw", int_x86_sse2_pcmpeq_w, 1>; +defm PCMPEQD : PDI_binop_rm_int<0x76, "pcmpeqd", int_x86_sse2_pcmpeq_d, 1>; defm PCMPGTB : PDI_binop_rm_int<0x64, "pcmpgtb", int_x86_sse2_pcmpgt_b>; defm PCMPGTW : PDI_binop_rm_int<0x65, "pcmpgtw", int_x86_sse2_pcmpgt_w>; defm PCMPGTD : PDI_binop_rm_int<0x66, "pcmpgtd", int_x86_sse2_pcmpgt_d>; diff --git a/test/CodeGen/X86/sse-commute.ll b/test/CodeGen/X86/sse-commute.ll new file mode 100644 index 0000000000..38ed644e95 --- /dev/null +++ b/test/CodeGen/X86/sse-commute.ll @@ -0,0 +1,20 @@ +; RUN: llc -march=x86-64 < %s | FileCheck %s + +; Commute the comparison to avoid a move. +; PR7500. + +; CHECK: a: +; CHECK-NOT: mov +; CHECK: pcmpeqd +define <2 x double> @a(<2 x double>, <2 x double>) nounwind readnone { +entry: + %tmp6 = bitcast <2 x double> %0 to <4 x i32> ; <<4 x i32>> [#uses=2] + %tmp4 = bitcast <2 x double> %1 to <4 x i32> ; <<4 x i32>> [#uses=1] + %cmp = icmp eq <4 x i32> %tmp6, %tmp4 ; <<4 x i1>> [#uses=1] + %sext = sext <4 x i1> %cmp to <4 x i32> ; <<4 x i32>> [#uses=1] + %and = and <4 x i32> %tmp6, %sext ; <<4 x i32>> [#uses=1] + %tmp8 = bitcast <4 x i32> %and to <2 x double> ; <<2 x double>> [#uses=1] + ret <2 x double> %tmp8 +} + + |