diff options
| author | Matthias Braun <matze@braunis.de> | 2017-05-05 22:04:05 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2017-05-05 22:04:05 +0000 |
| commit | 4682ac6c83d83f24100fd5293fabd97009e27996 (patch) | |
| tree | 607f8fe81402fe80ec5a2cd4cf5fb7de608d8367 /llvm/lib/CodeGen/PrologEpilogInserter.cpp | |
| parent | 8c74673388f62f5f4bffc7e840d405c0914558a4 (diff) | |
| download | bcm5719-llvm-4682ac6c83d83f24100fd5293fabd97009e27996.tar.gz bcm5719-llvm-4682ac6c83d83f24100fd5293fabd97009e27996.zip | |
ARM: Compute MaxCallFrame size early
This exposes a method in MachineFrameInfo that calculates
MaxCallFrameSize and calls it after instruction selection in the ARM
target.
This avoids
ARMBaseRegisterInfo::canRealignStack()/ARMFrameLowering::hasReservedCallFrame()
giving different answers in early/late phases of codegen.
The testcase shows a particular nasty example result of that where we
would fail to properly align an alloca.
Differential Revision: https://reviews.llvm.org/D32622
llvm-svn: 302303
Diffstat (limited to 'llvm/lib/CodeGen/PrologEpilogInserter.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/PrologEpilogInserter.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/PrologEpilogInserter.cpp b/llvm/lib/CodeGen/PrologEpilogInserter.cpp index 549f07ecd9c..d2afeae9e70 100644 --- a/llvm/lib/CodeGen/PrologEpilogInserter.cpp +++ b/llvm/lib/CodeGen/PrologEpilogInserter.cpp @@ -277,6 +277,9 @@ void PEI::calculateCallFrameInfo(MachineFunction &Fn) { AdjustsStack = true; } + assert(!MFI.isMaxCallFrameSizeComputed() || + (MFI.getMaxCallFrameSize() == MaxCallFrameSize && + MFI.adjustsStack() == AdjustsStack)); MFI.setAdjustsStack(AdjustsStack); MFI.setMaxCallFrameSize(MaxCallFrameSize); |
