f4335f075b
`clang -c -masm=intel` compiling a source file with file scope basic asm
incorrectly uses the AT&T dialect.
```
% cat a.c
asm("mov rax, rax");
% clang a.c -c -masm=intel
<inline asm>:1:1: error: unknown use of instruction mnemonic without a size suffix
mov rax, rax
^
```
Fix this by setting the assembler dialect from the MCAsmInfo object.
Note: `clang -c -flto -masm=intel a.c` still fails because of
https://reviews.llvm.org/D82862 for #34830: it tried to support AT&T
syntax for clang-cl, but the forced AT&T syntax is not compatible with
intended Intel syntax.
Pull Request: https://github.com/llvm/llvm-project/pull/85367
11 lines
401 B
LLVM
11 lines
401 B
LLVM
;; Test that we respect the assembler dialect when parsing module-level inline asm.
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; RUN: not llc < %s -mtriple=x86_64 2>&1 | FileCheck %s --check-prefix=ERR
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; RUN: llc < %s -mtriple=x86_64 -x86-asm-syntax=intel | FileCheck %s
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; ERR: <inline asm>:1:1: error: unknown use of instruction mnemonic without a size suffix
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; CHECK: .intel_syntax noprefix
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; CHECK: mov eax, eax
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module asm "mov eax, eax"
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