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| author | Chris Lattner <sabre@nondot.org> | 2006-10-12 17:42:56 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-10-12 17:42:56 +0000 |
| commit | f18c074e1b7c250aecbe07e89999f4d5f94ce0f9 (patch) | |
| tree | 4253231227ce79144fdd9466d819a7309655d771 /lib/Target/X86/X86InstrInfo.td | |
| parent | 3ad175bd707f268436afa42af8672569b5b92cb2 (diff) | |
| download | external_llvm-f18c074e1b7c250aecbe07e89999f4d5f94ce0f9.zip external_llvm-f18c074e1b7c250aecbe07e89999f4d5f94ce0f9.tar.gz external_llvm-f18c074e1b7c250aecbe07e89999f4d5f94ce0f9.tar.bz2 | |
Mark ADJCALLSTACKUP/DOWN as clobbering ESP so that virtregmap will notice
that it can't assume ESP is unmodified across the instrs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30905 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.td')
| -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 11c67bf..f7a5af2 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), |