Fix an off by one error.

Part of rdar://9037836 and rdar://9119939

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132590 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/VMCore/InlineAsm.cpp b/lib/VMCore/InlineAsm.cpp
index 70d0e3881e8cdf54d4b00430fb3e6af853c88215..c4e065df0572d74e70dd3dd50e46b3fdacfd4ff1 100644 (file)
--- a/lib/VMCore/InlineAsm.cpp
+++ b/lib/VMCore/InlineAsm.cpp
@@ -185,11 +185,10 @@ bool InlineAsm::ConstraintInfo::Parse(StringRef Str,
       // Multi-letter constraint
       // These will only occur with the existing multiple alternative
       // constraints and so we can use the isalpha loop below.
-      StringRef::iterator ConStart = I;
+      StringRef::iterator ConStart = ++I;
       while (I != E && isalpha(*I))
         ++I;
       pCodes->push_back(std::string(ConStart, I));
-      ++I;
     } else {
       // Single letter constraint.
       pCodes->push_back(std::string(I, I+1));

diff --git a/test/CodeGen/ARM/inlineasm3.ll b/test/CodeGen/ARM/inlineasm3.ll
index ff54d6d75ac61e50b0073f052f329c8d2589f339..cf38d8c718306f077aa8c4392476b420355754be 100644 (file)
--- a/test/CodeGen/ARM/inlineasm3.ll
+++ b/test/CodeGen/ARM/inlineasm3.ll
@@ -41,3 +41,12 @@ entry:
 tail call void asm sideeffect "flds s15, $0 \0A", "^Uv|m,~{s15}"(float 1.000000e+00) nounwind
 ret i32 0
 }
+
+; Radar 9037836 & 9119939
+
+@k.2126 = internal unnamed_addr global float 1.000000e+00
+define i32 @t4() nounwind {
+entry:
+call void asm sideeffect "flds s15, $0 \0A", "*^Uv,~{s15}"(float* @k.2126) nounwind
+ret i32 0
+}