diff options
| -rw-r--r-- | lib/Target/X86/AsmParser/X86AsmParser.cpp | 11 | ||||
| -rw-r--r-- | test/MC/AsmParser/X86/x86_32-new-encoder.s | 25 |
2 files changed, 36 insertions, 0 deletions
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp index f1e8958..40a6a7b 100644 --- a/lib/Target/X86/AsmParser/X86AsmParser.cpp +++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp @@ -706,6 +706,17 @@ ParseInstruction(const StringRef &Name, SMLoc NameLoc, Operands.erase(Operands.begin() + 1); } + // FIXME: Hack to handle "f{mul*,add*,sub*,div*} $op, st(0)" the same as + // "f{mul*,add*,sub*,div*} $op" + if ((Name.startswith("fmul") || Name.startswith("fadd") || + Name.startswith("fsub") || Name.startswith("fdiv")) && + Operands.size() == 3 && + static_cast<X86Operand*>(Operands[2])->isReg() && + static_cast<X86Operand*>(Operands[2])->getReg() == X86::ST0) { + delete Operands[2]; + Operands.erase(Operands.begin() + 2); + } + return false; } diff --git a/test/MC/AsmParser/X86/x86_32-new-encoder.s b/test/MC/AsmParser/X86/x86_32-new-encoder.s index 19af126..82df362 100644 --- a/test/MC/AsmParser/X86/x86_32-new-encoder.s +++ b/test/MC/AsmParser/X86/x86_32-new-encoder.s @@ -277,3 +277,28 @@ retl // CHECK: cmpsd $7, %xmm0, %xmm1 // CHECK: encoding: [0xf2,0x0f,0xc2,0xc8,0x07] cmpordsd %xmm0, %xmm1 + +// rdar://7995856 +// CHECK: fmul %st(0) +// CHECK: encoding: [0xd8,0xc8] + fmul %st(0), %st + +// CHECK: fadd %st(0) +// CHECK: encoding: [0xd8,0xc0] + fadd %st(0), %st + +// CHECK: fsub %st(0) +// CHECK: encoding: [0xd8,0xe0] + fsub %st(0), %st + +// CHECK: fsubr %st(0) +// CHECK: encoding: [0xd8,0xe8] + fsubr %st(0), %st + +// CHECK: fdivr %st(0) +// CHECK: encoding: [0xd8,0xf8] + fdivr %st(0), %st + +// CHECK: fdiv %st(0) +// CHECK: encoding: [0xd8,0xf0] + fdiv %st(0), %st |