diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86InstrCompiler.td | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrCompiler.td b/lib/Target/X86/X86InstrCompiler.td index 4c915d97b6..b28cd83551 100644 --- a/lib/Target/X86/X86InstrCompiler.td +++ b/lib/Target/X86/X86InstrCompiler.td @@ -214,6 +214,30 @@ def : Pat<(i64 (sext (i8 (X86setcc_c X86_COND_B, EFLAGS)))), def : Pat<(and (i8 (X86setcc_c X86_COND_B, EFLAGS)), 1), (SETBr)>; +// (add OP, SETB) -> (adc OP, 0) +def : Pat<(add (and (i8 (X86setcc_c X86_COND_B, EFLAGS)), 1), GR8:$op), + (ADC8ri GR8:$op, 0)>; +def : Pat<(add (and (i32 (X86setcc_c X86_COND_B, EFLAGS)), 1), GR32:$op), + (ADC32ri8 GR32:$op, 0)>; +def : Pat<(add (and (i64 (X86setcc_c X86_COND_B, EFLAGS)), 1), GR64:$op), + (ADC64ri8 GR64:$op, 0)>; + +// (sub OP, SETB) -> (sbb OP, 0) +def : Pat<(sub GR8:$op, (and (i8 (X86setcc_c X86_COND_B, EFLAGS)), 1)), + (SBB8ri GR8:$op, 0)>; +def : Pat<(sub GR32:$op, (and (i32 (X86setcc_c X86_COND_B, EFLAGS)), 1)), + (SBB32ri8 GR32:$op, 0)>; +def : Pat<(sub GR64:$op, (and (i64 (X86setcc_c X86_COND_B, EFLAGS)), 1)), + (SBB64ri8 GR64:$op, 0)>; + +// (sub OP, SETCC_CARRY) -> (adc OP, 0) +def : Pat<(sub GR8:$op, (i8 (X86setcc_c X86_COND_B, EFLAGS))), + (ADC8ri GR8:$op, 0)>; +def : Pat<(sub GR32:$op, (i32 (X86setcc_c X86_COND_B, EFLAGS))), + (ADC32ri8 GR32:$op, 0)>; +def : Pat<(sub GR64:$op, (i64 (X86setcc_c X86_COND_B, EFLAGS))), + (ADC64ri8 GR64:$op, 0)>; + //===----------------------------------------------------------------------===// // String Pseudo Instructions // |