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| 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 | 8de1fe3ccf17130904d9a4fd52a2f20287a257fd (patch) | |
| tree | c2745d084f48461da696f02c6e1bd3ca3fa86665 | |
| parent | a1c1db380891817afca62bd7de74c18919b04823 (diff) | |
| download | bcm5719-llvm-8de1fe3ccf17130904d9a4fd52a2f20287a257fd.tar.gz bcm5719-llvm-8de1fe3ccf17130904d9a4fd52a2f20287a257fd.zip | |
pcmpeqd and friends are Commutable.
llvm-svn: 106886
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrSSE.td | 6 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/sse-commute.ll | 20 |
2 files changed, 23 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86InstrSSE.td b/llvm/lib/Target/X86/X86InstrSSE.td index 3a381cfed3a..821b817f03d 100644 --- a/llvm/lib/Target/X86/X86InstrSSE.td +++ b/llvm/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/llvm/test/CodeGen/X86/sse-commute.ll b/llvm/test/CodeGen/X86/sse-commute.ll new file mode 100644 index 00000000000..38ed644e952 --- /dev/null +++ b/llvm/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 +} + + |
