Changes in directory llvm/lib/Target/X86:
X86InstrInfo.td updated: 1.289 -> 1.290
---
Log message:
Mark ADJCALLSTACKUP/DOWN as clobbering ESP so that virtregmap will notice
that it can't assume ESP is unmodified across the instrs.
---
Diffs of the changes: (+6 -2)
X86InstrInfo.td | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
Index: llvm/lib/Target/X86/X86InstrInfo.td
diff -u llvm/lib/Target/X86/X86InstrInfo.td:1.289
llvm/lib/Target/X86/X86InstrInfo.td:1.290
--- llvm/lib/Target/X86/X86InstrInfo.td:1.289 Wed Oct 11 16:03:53 2006
+++ llvm/lib/Target/X86/X86InstrInfo.td Thu Oct 12 12:42:56 2006
@@ -346,11 +346,15 @@
// 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),
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