It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 5 deletions

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index d4651fd6ab..9256faabeb 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -2327,13 +2327,13 @@ void SelectionDAGLowering::visitAlloca(AllocaInst &I) {
   AllocSize = DAG.getNode(ISD::MUL, IntPtr, AllocSize,
                           getIntPtrConstant(TySize));
 
-  // Handle alignment.  If the requested alignment is less than or equal to the
-  // stack alignment, ignore it and round the size of the allocation up to the
-  // stack alignment size.  If the size is greater than the stack alignment, we
-  // note this in the DYNAMIC_STACKALLOC node.
+  // Handle alignment.  If the requested alignment is less than the stack
+  // alignment, ignore it and round the size of the allocation up to the stack
+  // alignment size.  If the size is greater than or equal to the stack
+  // alignment, we note this in the DYNAMIC_STACKALLOC node.
   unsigned StackAlign =
     TLI.getTargetMachine().getFrameInfo()->getStackAlignment();
-  if (Align <= StackAlign) {
+  if (Align < StackAlign) {
     Align = 0;
     // Add SA-1 to the size.
     AllocSize = DAG.getNode(ISD::ADD, AllocSize.getValueType(), AllocSize,