diff options
Diffstat (limited to 'lib/Target/X86/X86Instr64bit.td')
| -rw-r--r-- | lib/Target/X86/X86Instr64bit.td | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Target/X86/X86Instr64bit.td b/lib/Target/X86/X86Instr64bit.td index b5fa862712e55..b6a2c0522ab52 100644 --- a/lib/Target/X86/X86Instr64bit.td +++ b/lib/Target/X86/X86Instr64bit.td @@ -1333,6 +1333,15 @@ def CMOVNO64rm : RI<0x41, MRMSrcMem, // if !overflow, GR64 = [mem64] X86_COND_NO, EFLAGS))]>, TB; } // isTwoAddress +// Use sbb to materialize carry flag into a GPR. +let Defs = [EFLAGS], Uses = [EFLAGS], isCodeGenOnly = 1 in +def SETB_C64r : RI<0x19, MRMInitReg, (outs GR64:$dst), (ins), + "sbb{q}\t$dst, $dst", + [(set GR64:$dst, (zext (X86setcc_c X86_COND_B, EFLAGS)))]>; + +def : Pat<(i64 (anyext (X86setcc_c X86_COND_B, EFLAGS))), + (SETB_C64r)>; + //===----------------------------------------------------------------------===// // Conversion Instructions... // |