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[ms] [llvm-ml] When parsing MASM, "jmp short" instructions are case insensitive

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Handle "short" in a case-insensitive fashion in MASM.

Required to correctly parse z_Windows_NT-586_asm.asm from the OpenMP runtime.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D104195
This commit is contained in:
Eric Astor 2021-06-13 18:35:51 -04:00
parent 679dc9bc3b
commit d15098fdc8
2 changed files with 23 additions and 1 deletions
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3
lib/Target/X86/AsmParser/X86AsmParser.cpp
View File

@ -3105,7 +3105,8 @@ bool X86AsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
(PatchedName.startswith("j") &&
ParseConditionCode(PatchedName.substr(1)) != X86::COND_INVALID))) {
StringRef NextTok = Parser.getTok().getString();
if (NextTok == "short") {
if (Parser.isParsingMasm() ? NextTok.equals_lower("short")
: NextTok == "short") {
SMLoc NameEndLoc =
NameLoc.getFromPointer(NameLoc.getPointer() + Name.size());
// Eat the short keyword.

21
test/tools/llvm-ml/jmp_short.asm Normal file
View File

@ -0,0 +1,21 @@
; RUN: llvm-ml -filetype=s %s /Fo - | FileCheck %s
.code
t1:
jmp short t1_label
jmp SHORT t1_label
JmP Short t1_label
JMP SHORT t1_label
mov eax, eax
t1_label:
ret
; CHECK-LABEL: t1:
; CHECK-NEXT: jmp t1_label
; CHECK-NEXT: jmp t1_label
; CHECK-NEXT: jmp t1_label
; CHECK-NEXT: jmp t1_label
; CHECK-NEXT: mov eax, eax
end