From 549e775e67a2257ada472b4bb976882edc0b6a7a Mon Sep 17 00:00:00 2001
From: Lauro Ramos Venancio <lauro.venancio@gmail.com>
Date: Tue, 31 Jul 2007 20:13:21 +0000
Subject: Fix a bug in GetKnownAlignment of packed structs.

llvm-svn: 40649
---
 llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'llvm/lib/Transforms/Scalar/InstructionCombining.cpp')

diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
index 06a67493750..a7e817a8e65 100644
--- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -7533,11 +7533,13 @@ static unsigned GetKnownAlignment(Value *V, TargetData *TD) {
 
     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;
   }
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