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| author | John F. Carr <jfc@mit.edu> | 1998-01-30 10:31:34 -0800 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1998-01-30 10:31:34 -0800 |
| commit | 4b526a9a94031f39cf5304423828c7a0b08ee5c4 (patch) | |
| tree | 81b3b6d0e6ca2e1d722becf838a59ed4ce2201df /gcc | |
| parent | 6209c7e96be9330ee80e305b901741c6c3ea0f5b (diff) | |
| download | gcc-4b526a9a94031f39cf5304423828c7a0b08ee5c4.zip gcc-4b526a9a94031f39cf5304423828c7a0b08ee5c4.tar.gz gcc-4b526a9a94031f39cf5304423828c7a0b08ee5c4.tar.bz2 | |
patch from jfc to improve aliasing/scheduling
* mips.c (save_restore_insns): Set RTX_UNCHANGING_P in register
save/restore MEM rtl.
From-SVN: r17559
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/mips/mips.c | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5dc3e30..6c09995 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Fri Jan 30 18:30:03 1998 John F Carr <jfc@mit.edu> + + * mips.c (save_restore_insns): Set RTX_UNCHANGING_P in register + save/restore MEM rtl. + Fri Jan 30 09:08:16 1998 Jeffrey A Law (law@cygnus.com) * configure.in: Check for declaration of abort. diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c index 53beb41..6589ccf 100644 --- a/gcc/config/mips/mips.c +++ b/gcc/config/mips/mips.c @@ -5802,6 +5802,7 @@ save_restore_insns (store_p, large_reg, large_offset, file) rtx mem_rtx = gen_rtx (MEM, word_mode, gen_rtx (PLUS, Pmode, base_reg_rtx, GEN_INT (gp_offset - base_offset))); + RTX_UNCHANGING_P (mem_rtx) = 1; /* The mips16 does not have an instruction to load $31, so we load $7 instead, and work things out @@ -6006,6 +6007,7 @@ save_restore_insns (store_p, large_reg, large_offset, file) rtx mem_rtx = gen_rtx (MEM, sz, gen_rtx (PLUS, Pmode, base_reg_rtx, GEN_INT (fp_offset - base_offset))); + RTX_UNCHANGING_P (mem_rtx) = 1; if (store_p) { |