diff options
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index 11c67bff06..f7a5af20f9 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -346,11 +346,15 @@ class Ii32<bits<8> o, Format f, dag ops, string asm, list<dag> pattern> // Instruction list... // +// ADJCALLSTACKDOWN/UP implicitly use/def ESP because they may be expanded into +// a stack adjustment and the codegen must know that they may modify the stack +// pointer before prolog-epilog rewriting occurs. def ADJCALLSTACKDOWN : I<0, Pseudo, (ops i32imm:$amt), "#ADJCALLSTACKDOWN", - [(X86callseq_start imm:$amt)]>; + [(X86callseq_start imm:$amt)]>, Imp<[ESP],[ESP]>; def ADJCALLSTACKUP : I<0, Pseudo, (ops i32imm:$amt1, i32imm:$amt2), "#ADJCALLSTACKUP", - [(X86callseq_end imm:$amt1, imm:$amt2)]>; + [(X86callseq_end imm:$amt1, imm:$amt2)]>, + Imp<[ESP],[ESP]>; def IMPLICIT_USE : I<0, Pseudo, (ops variable_ops), "#IMPLICIT_USE", []>; def IMPLICIT_DEF : I<0, Pseudo, (ops variable_ops), "#IMPLICIT_DEF", []>; def IMPLICIT_DEF_GR8 : I<0, Pseudo, (ops GR8:$dst), |