From 55240a5ddbaebc44c9acb0353c18a394b06f348f Mon Sep 17 00:00:00 2001 From: Elena Demikhovsky Date: Mon, 14 Oct 2013 07:26:51 +0000 Subject: Fixed a bug in dynamic allocation memory on stack. The alignment of allocated space was wrong, see Bugzila 17345. Done by Zvi Rackover . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192573 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'lib/CodeGen/SelectionDAG/LegalizeDAG.cpp') diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index ee373f8040..d805d2c4c7 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -1581,10 +1581,10 @@ void SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, Chain = SP.getValue(1); unsigned Align = cast(Tmp3)->getZExtValue(); unsigned StackAlign = TM.getFrameLowering()->getStackAlignment(); - if (Align > StackAlign) - SP = DAG.getNode(ISD::AND, dl, VT, SP, - DAG.getConstant(-(uint64_t)Align, VT)); Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value + if (Align > StackAlign) + Tmp1 = DAG.getNode(ISD::AND, dl, VT, Tmp1, + DAG.getConstant(-(uint64_t)Align, VT)); Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), -- cgit v1.2.3