llvm-mirror/inline-asm-clobber.ll at d4f3796eebbdf1d7983a263f45caf793142c3024 - llvm-mirror - Git.je (Gitea)

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Akira Hatanaka f67a747835 [inline asm] Add a check in InlineAsm::ConstraintInfo::Parse to make sure '{'

follows '~' in a clobber constraint string.

Previously llc would hit an llvm_unreachable when compiling an inline-asm
instruction with malformed constraint string "~x{21}". This commit enables
LLParser to catch the error earlier and print a more helpful diagnostic.

rdar://problem/14206559

llvm-svn: 217288

2014-09-05 22:30:32 +00:00

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 ; RUN: not llvm-as <%s 2>&1  | FileCheck %s
 ; "~x{21}" is not a valid clobber constraint.
 ; CHECK: invalid type for inline asm constraint string
 define void @foo() nounwind {
   call void asm sideeffect "mov x0, #42", "~{x0},~{x19},~x{21}"() nounwind
   ret void
 }