diff options
Diffstat (limited to 'gcc/config/pa/pa32-regs.h')
| -rw-r--r-- | gcc/config/pa/pa32-regs.h | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/gcc/config/pa/pa32-regs.h b/gcc/config/pa/pa32-regs.h index 3a51324..d2ba2f6 100644 --- a/gcc/config/pa/pa32-regs.h +++ b/gcc/config/pa/pa32-regs.h @@ -119,7 +119,8 @@ registers will generally not be allocated across a call). Experimentation has shown slightly better results by allocating - FP registers first. + FP registers first. We allocate the caller-saved registers more + or less in reverse order to their allocation as arguments. FP registers are ordered so that all L registers are selected before R registers. This works around a false dependency interlock on the @@ -130,14 +131,14 @@ { \ /* caller-saved fp regs. */ \ 68, 70, 72, 74, 76, 78, 80, 82, \ - 84, 86, 40, 42, 44, 46, 32, 34, \ - 36, 38, \ + 84, 86, 40, 42, 44, 46, 38, 36, \ + 34, 32, \ 69, 71, 73, 75, 77, 79, 81, 83, \ - 85, 87, 41, 43, 45, 47, 33, 35, \ - 37, 39, \ + 85, 87, 41, 43, 45, 47, 39, 37, \ + 35, 33, \ /* caller-saved general regs. */ \ - 19, 20, 21, 22, 23, 24, 25, 26, \ - 27, 28, 29, 31, 2, \ + 28, 19, 20, 21, 22, 31, 27, 29, \ + 23, 24, 25, 26, 2, \ /* callee-saved fp regs. */ \ 48, 50, 52, 54, 56, 58, 60, 62, \ 64, 66, \ |