[TargetLowering] StringRefize asm constraint getters.

There is some functional change here because it changes target code from
atoi(3) to StringRef::getAsInteger which has error checking. For valid
constraints there should be no difference.

llvm-svn: 241411

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 1a5333243fe..ee6785fd953 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -25164,7 +25164,7 @@ bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
         (matchAsm(AsmPieces[0], {"rorw", "$$8,", "${0:w}"}) ||
          matchAsm(AsmPieces[0], {"rolw", "$$8,", "${0:w}"}))) {
       AsmPieces.clear();
-      const std::string &ConstraintsStr = IA->getConstraintString();
+      StringRef ConstraintsStr = IA->getConstraintString();
       SplitString(StringRef(ConstraintsStr).substr(5), AsmPieces, ",");
       array_pod_sort(AsmPieces.begin(), AsmPieces.end());
       if (clobbersFlagRegisters(AsmPieces))
@@ -25178,7 +25178,7 @@ bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
         matchAsm(AsmPieces[1], {"rorl", "$$16,", "$0"}) &&
         matchAsm(AsmPieces[2], {"rorw", "$$8,", "${0:w}"})) {
       AsmPieces.clear();
-      const std::string &ConstraintsStr = IA->getConstraintString();
+      StringRef ConstraintsStr = IA->getConstraintString();
       SplitString(StringRef(ConstraintsStr).substr(5), AsmPieces, ",");
       array_pod_sort(AsmPieces.begin(), AsmPieces.end());
       if (clobbersFlagRegisters(AsmPieces))
@@ -25205,7 +25205,7 @@ bool X86TargetLowering::ExpandInlineAsm(CallInst *CI) const {
 /// getConstraintType - Given a constraint letter, return the type of
 /// constraint it is for this target.
 X86TargetLowering::ConstraintType
-X86TargetLowering::getConstraintType(const std::string &Constraint) const {
+X86TargetLowering::getConstraintType(StringRef Constraint) const {
   if (Constraint.size() == 1) {
     switch (Constraint[0]) {
     case 'R':
@@ -25537,7 +25537,7 @@ void X86TargetLowering::LowerAsmOperandForConstraint(SDValue Op,
 
 std::pair<unsigned, const TargetRegisterClass *>
 X86TargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
-                                                const std::string &Constraint,
+                                                StringRef Constraint,
                                                 MVT VT) const {
   // First, see if this is a constraint that directly corresponds to an LLVM
   // register class.