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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-09-07 19:29:25 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-09-07 19:29:25 -0400 |
| commit | 6d545b717cc72d1394ad5f9c289ab2617a7767d3 (patch) | |
| tree | aa08dc44886420087be01834c4b8aeae104c33b0 | |
| parent | 66415c8b0e1ccecf8a2138a43ac141f22868d403 (diff) | |
| download | gcc-6d545b717cc72d1394ad5f9c289ab2617a7767d3.zip gcc-6d545b717cc72d1394ad5f9c289ab2617a7767d3.tar.gz gcc-6d545b717cc72d1394ad5f9c289ab2617a7767d3.tar.bz2 | |
(REGISTER_MOVE_COST): Moving between special registers is expensive.
From-SVN: r8035
| -rw-r--r-- | gcc/config/rs6000/rs6000.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h index c7cd68a..ce930cd 100644 --- a/gcc/config/rs6000/rs6000.h +++ b/gcc/config/rs6000/rs6000.h @@ -478,6 +478,12 @@ extern char *rs6000_cpu_string; ((CLASS1) == FLOAT_REGS && (CLASS2) == FLOAT_REGS ? 2 \ : (CLASS1) == FLOAT_REGS && (CLASS2) != FLOAT_REGS ? 10 \ : (CLASS1) != FLOAT_REGS && (CLASS2) == FLOAT_REGS ? 10 \ + : (((CLASS1) == SPECIAL_REGS \ + || (CLASS1) == MQ_REGS || (CLASS1) == LINK_REGS \ + || (CLASS1) == CTR_REGS || (CLASS1) == BASE_REGS) \ + && ((CLASS2) == SPECIAL_REGS \ + || (CLASS2) == MQ_REGS || (CLASS2) == LINK_REGS \ + || (CLASS2) == CTR_REGS || (CLASS2) == BASE_REGS)) ? 10 \ : 2) /* A C expressions returning the cost of moving data of MODE from a register to |