fix rdar://8456389 - llvm-mc mismatch with 'as' on 'fstp'
-This line, and those below, will be ignored--
M test/MC/AsmParser/X86/x86_instructions.s
M lib/Target/X86/AsmParser/X86AsmParser.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114527 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 4c51ed6..d8650e0 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -1015,6 +1015,14 @@
Operands[0] = X86Operand::CreateToken("movsl", NameLoc);
}
+ // fstp <mem> -> fstps <mem>. Without this, we'll default to fstpl due to
+ // suffix searching.
+ if (Name == "fstp" && Operands.size() == 2 &&
+ static_cast<X86Operand*>(Operands[1])->isMem()) {
+ delete Operands[0];
+ Operands[0] = X86Operand::CreateToken("fstps", NameLoc);
+ }
+
return false;
}