diff options
| -rw-r--r-- | lib/Target/X86/X86FastISel.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp index 68d0d85501..ed4168e262 100644 --- a/lib/Target/X86/X86FastISel.cpp +++ b/lib/Target/X86/X86FastISel.cpp @@ -1365,6 +1365,16 @@ unsigned X86FastISel::TargetMaterializeConstant(Constant *C) { } unsigned X86FastISel::TargetMaterializeAlloca(AllocaInst *C) { + // Fail on dynamic allocas. At this point, getRegForValue has already + // checked its CSE maps, so if we're here trying to handle a dynamic + // alloca, we're not going to succeed. X86SelectAddress has a + // check for dynamic allocas, because it's called directly from + // various places, but TargetMaterializeAlloca also needs a check + // in order to avoid recursion between getRegForValue, + // X86SelectAddrss, and TargetMaterializeAlloca. + if (!StaticAllocaMap.count(C)) + return 0; + X86AddressMode AM; if (!X86SelectAddress(C, AM, false)) return 0; |