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| author | Dylan McKay <me@dylanmckay.io> | 2017-05-31 06:27:46 +0000 |
|---|---|---|
| committer | Dylan McKay <me@dylanmckay.io> | 2017-05-31 06:27:46 +0000 |
| commit | 043fa4b3d62190b45390347fc1a39e1c75e9ea0d (patch) | |
| tree | 14c44a1ff70c4c4af792b46dab4b3975bb69aa90 /llvm | |
| parent | 48614d4a2c5401bc24a16739b51f02ba3b395c4b (diff) | |
| download | bcm5719-llvm-043fa4b3d62190b45390347fc1a39e1c75e9ea0d.tar.gz bcm5719-llvm-043fa4b3d62190b45390347fc1a39e1c75e9ea0d.zip | |
[AVR] Fix a big in shift operator lowering; Authored by Dr. Gergo Erdi
When generating code for a shift loop, check the shift
amount against the literal value 0, not R0
llvm-svn: 304284
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/AVR/AVRISelLowering.cpp | 4 | ||||
| -rw-r--r-- | llvm/test/CodeGen/AVR/rot.ll | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/llvm/lib/Target/AVR/AVRISelLowering.cpp b/llvm/lib/Target/AVR/AVRISelLowering.cpp index ef9c00e4b78..7d3faac1dcc 100644 --- a/llvm/lib/Target/AVR/AVRISelLowering.cpp +++ b/llvm/lib/Target/AVR/AVRISelLowering.cpp @@ -1500,9 +1500,9 @@ MachineBasicBlock *AVRTargetLowering::insertShift(MachineInstr &MI, unsigned DstReg = MI.getOperand(0).getReg(); // BB: - // cp 0, N + // cpi N, 0 // breq RemBB - BuildMI(BB, dl, TII.get(AVR::CPRdRr)).addReg(ShiftAmtSrcReg).addReg(AVR::R0); + BuildMI(BB, dl, TII.get(AVR::CPIRdK)).addReg(ShiftAmtSrcReg).addImm(0); BuildMI(BB, dl, TII.get(AVR::BREQk)).addMBB(RemBB); // LoopBB: diff --git a/llvm/test/CodeGen/AVR/rot.ll b/llvm/test/CodeGen/AVR/rot.ll index e43daf3e6aa..a7b77d97ba6 100644 --- a/llvm/test/CodeGen/AVR/rot.ll +++ b/llvm/test/CodeGen/AVR/rot.ll @@ -6,7 +6,7 @@ define i8 @rol8(i8 %val, i8 %amt) { ; CHECK: andi r22, 7 - ; CHECK-NEXT: cp r22, r0 + ; CHECK-NEXT: cpi r22, 0 ; CHECK-NEXT: breq LBB0_2 ; CHECK-NEXT: LBB0_1: @@ -32,7 +32,7 @@ define i8 @rol8(i8 %val, i8 %amt) { define i8 @ror8(i8 %val, i8 %amt) { ; CHECK: andi r22, 7 - ; CHECK-NEXT: cp r22, r0 + ; CHECK-NEXT: cpi r22, 0 ; CHECK-NEXT: breq LBB1_2 ; CHECK-NEXT: LBB1_1: |
