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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-08-04 12:05:16 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-08-04 12:05:16 +0000 |
| commit | 75311b7b4dbb284e7539c0c62331387f3c4cd1ec (patch) | |
| tree | d44a1ce6a1fcb67f4cb4286ffd5e2ecbde8a2fa9 /lib/Target/X86/X86InstrSSE.td | |
| parent | f3e3417e652420a2880fe1efa98ff11936f082e1 (diff) | |
| download | external_llvm-75311b7b4dbb284e7539c0c62331387f3c4cd1ec.zip external_llvm-75311b7b4dbb284e7539c0c62331387f3c4cd1ec.tar.gz external_llvm-75311b7b4dbb284e7539c0c62331387f3c4cd1ec.tar.bz2 | |
X86: Turn fp selects into mask operations.
double test(double a, double b, double c, double d) { return a<b ? c : d; }
before:
_test:
ucomisd %xmm0, %xmm1
ja LBB0_2
movaps %xmm3, %xmm2
LBB0_2:
movaps %xmm2, %xmm0
after:
_test:
cmpltsd %xmm1, %xmm0
andpd %xmm0, %xmm2
andnpd %xmm3, %xmm0
orpd %xmm2, %xmm0
Small speedup on Benchmarks/SmallPT
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187706 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrSSE.td')
| -rw-r--r-- | lib/Target/X86/X86InstrSSE.td | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index 9911b8d..a86006a 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -2843,8 +2843,8 @@ defm FsOR : sse12_fp_alias_pack_logical<0x56, "or", X86for, defm FsXOR : sse12_fp_alias_pack_logical<0x57, "xor", X86fxor, SSE_BIT_ITINS_P>; -let neverHasSideEffects = 1, Pattern = []<dag>, isCommutable = 0 in - defm FsANDN : sse12_fp_alias_pack_logical<0x55, "andn", undef, +let isCommutable = 0 in + defm FsANDN : sse12_fp_alias_pack_logical<0x55, "andn", X86fandn, SSE_BIT_ITINS_P>; /// sse12_fp_packed_logical - SSE 1 & 2 packed FP logical ops |