diff options
Diffstat (limited to 'src/cmd/compile/internal/ssa/gen/PPC64.rules')
| -rw-r--r-- | src/cmd/compile/internal/ssa/gen/PPC64.rules | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/cmd/compile/internal/ssa/gen/PPC64.rules b/src/cmd/compile/internal/ssa/gen/PPC64.rules index 0c182a6222..22086db592 100644 --- a/src/cmd/compile/internal/ssa/gen/PPC64.rules +++ b/src/cmd/compile/internal/ssa/gen/PPC64.rules @@ -574,7 +574,12 @@ (MOVDstorezero [0] destptr mem)))) // Handle cases not handled above -(Zero [s] ptr mem) -> (LoweredZero [s] ptr mem) +// Lowered Short cases do not generate loops, and as a result don't clobber +// the address registers or flags. +(Zero [s] ptr mem) && objabi.GOPPC64 <= 8 && s < 64 -> (LoweredZeroShort [s] ptr mem) +(Zero [s] ptr mem) && objabi.GOPPC64 <= 8 -> (LoweredZero [s] ptr mem) +(Zero [s] ptr mem) && s < 128 && objabi.GOPPC64 >= 9 -> (LoweredQuadZeroShort [s] ptr mem) +(Zero [s] ptr mem) && objabi.GOPPC64 >= 9 -> (LoweredQuadZero [s] ptr mem) // moves // Only the MOVD and MOVW instructions require 4 byte @@ -608,8 +613,12 @@ // Large move uses a loop. Since the address is computed and the // offset is zero, any alignment can be used. -(Move [s] dst src mem) && s > 8 && logLargeCopy(v, s) -> +(Move [s] dst src mem) && s > 8 && objabi.GOPPC64 <= 8 && logLargeCopy(v, s) -> (LoweredMove [s] dst src mem) +(Move [s] dst src mem) && s > 8 && s <= 64 && objabi.GOPPC64 >= 9 -> + (LoweredQuadMoveShort [s] dst src mem) +(Move [s] dst src mem) && s > 8 && objabi.GOPPC64 >= 9 && logLargeCopy(v, s) -> + (LoweredQuadMove [s] dst src mem) // Calls // Lowering calls |