diff options
| author | Dan Gohman <gohman@apple.com> | 2008-11-12 22:55:05 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-11-12 22:55:05 +0000 |
| commit | bc5cbb8be9d935240be5a57a8f37c5258a9d0563 (patch) | |
| tree | 58569a85b1b8597fd278d30f126dc74bb30e2425 /lib/Target/X86/X86TargetMachine.cpp | |
| parent | cb5798285aa3a3cd93448beda6264152c761e8e3 (diff) | |
Move the code that inserts X87 FP_REG_KILL instructions from a
special-purpose hook to a new pass. Also, add check to see if any
x87 virtual registers are used, to avoid doing any work in the
common case that no x87 code is needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59190 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86TargetMachine.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetMachine.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index 2b67971d48..1e90c0fe8c 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -188,6 +188,9 @@ bool X86TargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) { if (EnableFastISel) PM.add(createDeadMachineInstructionElimPass()); + // Install a pass to insert x87 FP_REG_KILL instructions, as needed. + PM.add(createX87FPRegKillInserterPass()); + return false; } |