From c36b7069b42bece963b7e6adf020353ce990ef76 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Fri, 7 Jan 2011 23:50:32 +0000 Subject: Do not model all INLINEASM instructions as having unmodelled side effects. Instead encode llvm IR level property "HasSideEffects" in an operand (shared with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check the operand when the instruction is an INLINEASM. This allows memory instructions to be moved around INLINEASM instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123044 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/PrologEpilogInserter.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'lib/CodeGen/PrologEpilogInserter.cpp') diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp index 5ba7086eef..699c9b98cc 100644 --- a/lib/CodeGen/PrologEpilogInserter.cpp +++ b/lib/CodeGen/PrologEpilogInserter.cpp @@ -21,6 +21,7 @@ #define DEBUG_TYPE "pei" #include "PrologEpilogInserter.h" +#include "llvm/InlineAsm.h" #include "llvm/CodeGen/MachineDominators.h" #include "llvm/CodeGen/MachineLoopInfo.h" #include "llvm/CodeGen/MachineInstr.h" @@ -172,7 +173,8 @@ void PEI::calculateCallsInformation(MachineFunction &Fn) { FrameSDOps.push_back(I); } else if (I->isInlineAsm()) { // Some inline asm's need a stack frame, as indicated by operand 1. - if (I->getOperand(1).getImm()) + unsigned ExtraInfo = I->getOperand(InlineAsm::MIOp_ExtraInfo).getImm(); + if (ExtraInfo & InlineAsm::Extra_IsAlignStack) AdjustsStack = true; } -- cgit v1.2.3-18-g5258