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| author | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 23:50:32 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 23:50:32 +0000 |
| commit | c36b7069b42bece963b7e6adf020353ce990ef76 (patch) | |
| tree | fdbe6e1cede36ae3485403b9165bfdc039056eeb /lib/CodeGen/PrologEpilogInserter.cpp | |
| parent | 067a16c974fef473fd3bca1d58db0d50c59882ce (diff) | |
| download | llvm-c36b7069b42bece963b7e6adf020353ce990ef76.tar.gz llvm-c36b7069b42bece963b7e6adf020353ce990ef76.tar.bz2 llvm-c36b7069b42bece963b7e6adf020353ce990ef76.tar.xz | |
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
Diffstat (limited to 'lib/CodeGen/PrologEpilogInserter.cpp')
| -rw-r--r-- | lib/CodeGen/PrologEpilogInserter.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
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; } |