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| author | Christopher Lamb <christopher.lamb@gmail.com> | 2007-07-26 08:18:32 +0000 |
|---|---|---|
| committer | Christopher Lamb <christopher.lamb@gmail.com> | 2007-07-26 08:18:32 +0000 |
| commit | bab2474b64e81be0ed4fc35d16cdfac65f283361 (patch) | |
| tree | 1d40ee8087365cadd4070d9bd6c73984c3bd8a0a /lib/CodeGen/LLVMTargetMachine.cpp | |
| parent | e24f8f1ec9277dc80ebf38f0d914053f8c31caf1 (diff) | |
Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40521 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LLVMTargetMachine.cpp')
| -rw-r--r-- | lib/CodeGen/LLVMTargetMachine.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp index 218e79ac72..4620abb721 100644 --- a/lib/CodeGen/LLVMTargetMachine.cpp +++ b/lib/CodeGen/LLVMTargetMachine.cpp @@ -96,6 +96,8 @@ LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM, if (addPreEmitPass(PM, Fast) && PrintMachineCode) PM.add(createMachineFunctionPrinterPass(cerr)); + + PM.add(createLowerSubregsPass()); switch (FileType) { default: @@ -197,6 +199,8 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM, if (addPreEmitPass(PM, Fast) && PrintMachineCode) PM.add(createMachineFunctionPrinterPass(cerr)); + + PM.add(createLowerSubregsPass()); addCodeEmitter(PM, Fast, PrintEmittedAsm, MCE); |