CG support for inline asm constraints with symbolic names. Fixes PR3345
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62444 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index 04fc26d..cd5626d 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -837,7 +837,10 @@
}
static std::string SimplifyConstraint(const char* Constraint,
- TargetInfo &Target) {
+ TargetInfo &Target,
+ const std::string *OutputNamesBegin = 0,
+ const std::string *OutputNamesEnd = 0)
+{
std::string Result;
while (*Constraint) {
@@ -853,6 +856,17 @@
case 'g':
Result += "imr";
break;
+ case '[': {
+ assert(OutputNamesBegin && OutputNamesEnd &&
+ "Must pass output names to constraints with a symbolic name");
+ unsigned Index;
+ bool result = Target.resolveSymbolicName(Constraint,
+ OutputNamesBegin,
+ OutputNamesEnd, Index);
+ assert(result && "Could not resolve symbolic name");
+ Result += llvm::utostr(Index);
+ break;
+ }
}
Constraint++;
@@ -986,7 +1000,9 @@
Constraints += ',';
// Simplify the input constraint.
- InputConstraint = SimplifyConstraint(InputConstraint.c_str(), Target);
+ InputConstraint = SimplifyConstraint(InputConstraint.c_str(), Target,
+ S.begin_output_names(),
+ S.end_output_names());
llvm::Value *Arg = EmitAsmInput(S, Info, InputExpr, Constraints);