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| author | Anton Korobeynikov <asl@math.spbu.ru> | 2008-04-23 18:23:30 +0000 |
|---|---|---|
| committer | Anton Korobeynikov <asl@math.spbu.ru> | 2008-04-23 18:23:30 +0000 |
| commit | d52bdaff0c73c105167b70941af245f46b70753f (patch) | |
| tree | e5f4945acfb09c5be4e43182d0a0a4f3ab236ec6 /lib/Target/X86/X86TargetMachine.cpp | |
| parent | 856914fe0084278d11edec79c8b707a6276b8857 (diff) | |
| download | llvm-d52bdaff0c73c105167b70941af245f46b70753f.tar.gz llvm-d52bdaff0c73c105167b70941af245f46b70753f.tar.bz2 llvm-d52bdaff0c73c105167b70941af245f46b70753f.tar.xz | |
Be over-conservative: scan for all used virtual registers and calculate maximal stack alignment in assumption, that there will be spill of vector register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50167 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86TargetMachine.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetMachine.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index f75a77c6b0..218f356b92 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -162,6 +162,8 @@ bool X86TargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) { } bool X86TargetMachine::addPreRegAlloc(PassManagerBase &PM, bool Fast) { + // Calculate and set max stack object alignment early, so we can decide + // whether we will need stack realignment (and thus FP). PM.add(createX86MaxStackAlignmentCalculatorPass()); return false; // -print-machineinstr shouldn't print after this. } |