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CodeGen: Simplify consecutive '%' modifiers 

LLVM the consecutive '%' modifiers are redundant, skip them.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@225602 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2015-01-11 09:13:56 +00:00
parent 1bd59c97fb
commit 0dcea0929b
2 changed files with 10 additions and 2 deletions
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5
lib/CodeGen/CGStmt.cpp
View File

@ -1660,8 +1660,9 @@ SimplifyConstraint(const char *Constraint, const TargetInfo &Target,
Constraint++;
break;
case '&':
Result += '&';
while (Constraint[1] && Constraint[1] == '&')
case '%':
Result += *Constraint;
while (Constraint[1] && Constraint[1] == *Constraint)
Constraint++;
break;
case ',':

7
test/CodeGen/asm.c
View File

@ -255,3 +255,10 @@ void t30(int len) {
// CHECK: @t30
// CHECK: call void asm sideeffect "", "=*&rm,0,~{dirflag},~{fpsr},~{flags}"
}
void t31(int len) {
__asm__ volatile(""
: "+%%rm"(len), "+rm"(len));
// CHECK: @t31
// CHECK: call void asm sideeffect "", "=*%rm,=*rm,0,1,~{dirflag},~{fpsr},~{flags}"
}