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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-08-12 10:14:58 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-08-12 10:14:58 +0000 |
| commit | bc7f99a3ab802f4f5be6f3b0a97df03e6bfd3375 (patch) | |
| tree | d38ad79676f320526b91fdd49d00f02429204ff4 /llvm/lib/CodeGen/MachineInstr.cpp | |
| parent | c5746865296fc07bb7f985d44d14ce780ac12086 (diff) | |
| download | bcm5719-llvm-bc7f99a3ab802f4f5be6f3b0a97df03e6bfd3375.tar.gz bcm5719-llvm-bc7f99a3ab802f4f5be6f3b0a97df03e6bfd3375.zip | |
[X86] Allow x86 call frame optimization to fold more loads into pushes
This abstracts away the test for "when can we fold across a MachineInstruction"
into the the MI interface, and changes call-frame optimization use the same test
the peephole optimizer users.
Differential Revision: http://reviews.llvm.org/D11945
llvm-svn: 244729
Diffstat (limited to 'llvm/lib/CodeGen/MachineInstr.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineInstr.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp index c3d58426277..e072ee1d6d5 100644 --- a/llvm/lib/CodeGen/MachineInstr.cpp +++ b/llvm/lib/CodeGen/MachineInstr.cpp @@ -1503,6 +1503,10 @@ bool MachineInstr::hasUnmodeledSideEffects() const { return false; } +bool MachineInstr::isLoadFoldBarrier() const { + return mayStore() || isCall() || hasUnmodeledSideEffects(); +} + /// allDefsAreDead - Return true if all the defs of this instruction are dead. /// bool MachineInstr::allDefsAreDead() const { |
