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| author | Chris Lattner <sabre@nondot.org> | 2010-09-22 06:26:39 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-09-22 06:26:39 +0000 |
| commit | 2c5291b56358bf239bdfc675ed681c2da3eb4901 (patch) | |
| tree | 904b5043f036d22d51f4aff52c059c638a344935 /lib | |
| parent | 1eb1b68e3a5241591bfa18d4beb0e0cf13a48ef2 (diff) | |
| download | llvm-2c5291b56358bf239bdfc675ed681c2da3eb4901.tar.gz llvm-2c5291b56358bf239bdfc675ed681c2da3eb4901.tar.bz2 llvm-2c5291b56358bf239bdfc675ed681c2da3eb4901.tar.xz | |
fix rdar://8456371 - Handle commutable instructions written backward.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114536 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/AsmParser/X86AsmParser.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp index bb6e05c286..01ccc50adf 100644 --- a/lib/Target/X86/AsmParser/X86AsmParser.cpp +++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp @@ -911,6 +911,16 @@ ParseInstruction(StringRef Name, SMLoc NameLoc, Operands.erase(Operands.begin() + 2); } + // FIXME: Hack to handle "f{mul*,add*} st(0), $op" the same as + // "f{mul*,add*} $op", since they commute. + if ((Name.startswith("fmul") || Name.startswith("fadd")) && + Operands.size() == 3 && + static_cast<X86Operand*>(Operands[1])->isReg() && + static_cast<X86Operand*>(Operands[1])->getReg() == X86::ST0) { + delete Operands[1]; + Operands.erase(Operands.begin() + 1); + } + // FIXME: Hack to handle "imul <imm>, B" which is an alias for "imul <imm>, B, // B". if (Name.startswith("imul") && Operands.size() == 3 && |