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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-09-07 18:48:32 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-09-07 18:48:32 +0000 |
| commit | 02f2f89a985d2fe02227cbc579aef6f73e8f5c54 (patch) | |
| tree | b4b00adef8ad13bbf388cbfeef97cc9675e1e094 /llvm/lib/Target/X86/X86MCInstLower.cpp | |
| parent | 5d5f4862eba552865de491dac705bd062cc60fc4 (diff) | |
| download | bcm5719-llvm-02f2f89a985d2fe02227cbc579aef6f73e8f5c54.tar.gz bcm5719-llvm-02f2f89a985d2fe02227cbc579aef6f73e8f5c54.zip | |
Fix atomic load and store on x86 to pass -verify-machineinstrs (and possibly fix some subtle bugs involving passes which check mayStore()).
This isn't exactly ideal, but it is good enough for the moment.
llvm-svn: 139245
Diffstat (limited to 'llvm/lib/Target/X86/X86MCInstLower.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86MCInstLower.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86MCInstLower.cpp b/llvm/lib/Target/X86/X86MCInstLower.cpp index 2ed596af15e..6cb5831f551 100644 --- a/llvm/lib/Target/X86/X86MCInstLower.cpp +++ b/llvm/lib/Target/X86/X86MCInstLower.cpp @@ -469,6 +469,18 @@ ReSimplify: case X86::JLE_4: OutMI.setOpcode(X86::JLE_1); break; case X86::JG_4: OutMI.setOpcode(X86::JG_1); break; + // Atomic load and store require a separate pseudo-inst because Acquire + // implies mayStore and Release implies mayLoad; fix these to regular MOV + // instructions here + case X86::ACQUIRE_MOV8rm: OutMI.setOpcode(X86::MOV8rm); goto ReSimplify; + case X86::ACQUIRE_MOV16rm: OutMI.setOpcode(X86::MOV16rm); goto ReSimplify; + case X86::ACQUIRE_MOV32rm: OutMI.setOpcode(X86::MOV32rm); goto ReSimplify; + case X86::ACQUIRE_MOV64rm: OutMI.setOpcode(X86::MOV64rm); goto ReSimplify; + case X86::RELEASE_MOV8mr: OutMI.setOpcode(X86::MOV8mr); goto ReSimplify; + case X86::RELEASE_MOV16mr: OutMI.setOpcode(X86::MOV16mr); goto ReSimplify; + case X86::RELEASE_MOV32mr: OutMI.setOpcode(X86::MOV32mr); goto ReSimplify; + case X86::RELEASE_MOV64mr: OutMI.setOpcode(X86::MOV64mr); goto ReSimplify; + // We don't currently select the correct instruction form for instructions // which have a short %eax, etc. form. Handle this by custom lowering, for // now. |
