commit c7d1114ade08821746f448a6b6e9507da807022d
author Lauro Ramos Venancio <lauro.venancio@gmail.com> Tue Jul 31 20:13:21 2007 +0000
committer Lauro Ramos Venancio <lauro.venancio@gmail.com> Tue Jul 31 20:13:21 2007 +0000
tree a8b15ebf255867ff0cdf902f6520c2523d671c32
parent b1576f56c8e8ec7afb49e4af77f7f5871f1b52ec

Fix a bug in GetKnownAlignment of packed structs.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40649 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/InstructionCombining.cpp

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 06a6749..a7e817a 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -7533,11 +7533,13 @@
 
     const Type *BasePtrTy = GEPI->getOperand(0)->getType();
     const PointerType *PtrTy = cast<PointerType>(BasePtrTy);
-    if (TD->getABITypeAlignment(PtrTy->getElementType())
-        <= BaseAlignment) {
+    unsigned Align = TD->getABITypeAlignment(PtrTy->getElementType());
+    if (Align <= BaseAlignment) {
       const Type *GEPTy = GEPI->getType();
       const PointerType *GEPPtrTy = cast<PointerType>(GEPTy);
-      return TD->getABITypeAlignment(GEPPtrTy->getElementType());
+      Align = std::min(Align, (unsigned)
+                       TD->getABITypeAlignment(GEPPtrTy->getElementType()));
+      return Align;
     }
     return 0;
   }