Message ID | 8E1C034C-7935-4D83-810C-08A600310FB0@sandoe.co.uk |
---|---|
State | New |
Headers | show |
Series | [powerpc] Fix speculation barrier and group nop to emit target register names. | expand |
Hi Iain, On Sat, Jan 12, 2019 at 01:28:05PM +0000, Iain Sandoe wrote: > The current implementation of “speculation_barrier” and “group_end_nop” insns emit hard-wired register names which causes tests using them to fail on Darwin, at least, which uses “rNN” instead of “NN”. > > The patch makes the register names for these insns use the operand output mechanism to substitute the appropriate variant when needed. This is fine for trunk and all backports you may need/want. Thanks, Segher > * config/rs6000/rs6000.md (group_end_nop): Emit > insn register names using operand format, rather than > hard-wired. (speculation_barrier): Likewise. [ Get your mail client not to mess up changelogs? ;-) ]
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 56364e0..86badc2 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -12494,15 +12494,18 @@ [(unspec [(const_int 0)] UNSPEC_GRP_END_NOP)] "" { - if (rs6000_tune == PROCESSOR_POWER6) - return "ori 1,1,0"; - return "ori 2,2,0"; + operands[0] = gen_rtx_REG (Pmode, + rs6000_tune == PROCESSOR_POWER6 ? 1 : 2); + return "ori %0,%0,0"; }) (define_insn "speculation_barrier" [(unspec_volatile:BLK [(const_int 0)] UNSPECV_SPEC_BARRIER)] "" - "ori 31,31,0") +{ + operands[0] = gen_rtx_REG (Pmode, 31); + return "ori %0,%0,0"; +}) ;; Define the subtract-one-and-jump insns, starting with the template ;; so loop.c knows what to generate.