================
Comment at: lib/CodeGen/TargetInfo.cpp:644
@@ +643,3 @@
+ // We have an operand reference.
+ size_t DigitStart = Pos;
+ size_t DigitEnd = AsmString.find_first_not_of("0123456789", DigitStart);
----------------
Pos == DigitStart, they point to the first non dollar character.
================
Comment at: lib/CodeGen/TargetInfo.cpp:645
@@ +644,3 @@
+ size_t DigitStart = Pos;
+ size_t DigitEnd = AsmString.find_first_not_of("0123456789", DigitStart);
+ if (DigitEnd == std::string::npos)
----------------
If the character at DigitStart is not a number, DigitStart == DigitEnd.
================
Comment at: lib/CodeGen/TargetInfo.cpp:657
@@ +656,3 @@
+ }
+ Pos = DigitEnd;
+ }
----------------
If DigitStart == DigitEnd, wouldn't Pos be unchanged at this point? I guess
that would be handled by the next iteration of the loop.
http://reviews.llvm.org/D5177
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