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| author | Richard Earnshaw <rearnsha@arm.com> | 2004-08-30 12:43:19 +0000 |
|---|---|---|
| committer | Richard Earnshaw <rearnsha@gcc.gnu.org> | 2004-08-30 12:43:19 +0000 |
| commit | a8b3643c4056686ad991a348ef97060704bf2622 (patch) | |
| tree | 7d88c1fadd72ff1cfc5933080011526cf3a5d718 /gcc | |
| parent | 4094f4d2c49d3a83fb43e481c4110f16fb812aaf (diff) | |
| download | gcc-a8b3643c4056686ad991a348ef97060704bf2622.zip gcc-a8b3643c4056686ad991a348ef97060704bf2622.tar.gz gcc-a8b3643c4056686ad991a348ef97060704bf2622.tar.bz2 | |
sched-deps.c (get_condition): Partially revert previous, by never trying to extract the condition from a condjump.
* sched-deps.c (get_condition): Partially revert previous, by never
trying to extract the condition from a condjump.
From-SVN: r86763
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/sched-deps.c | 10 |
2 files changed, 13 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d2ccd28..e44502c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-08-30 Richard Earnshaw <rearnsha@arm.com> + + * sched-deps.c (get_condition): Partially revert previous, by never + trying to extract the condition from a condjump. + 2004-08-30 Richard Sandiford <rsandifo@redhat.com> * config/mips/mips.md (UNSPEC_{RSQRT,RECIP}[12]_{S,D,PS}): Delete. diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index 2c551cf..b76e217 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -153,6 +153,11 @@ get_condition (rtx insn) return 0; src = SET_SRC (pc_set (insn)); +#if 0 + /* The previous code here was completely invalid and could never extract + the condition from a jump. This code does the correct thing, but that + triggers latent bugs later in the scheduler on ports with conditional + execution. So this is disabled for now. */ if (XEXP (src, 2) == pc_rtx) return XEXP (src, 0); else if (XEXP (src, 1) == pc_rtx) @@ -165,8 +170,9 @@ get_condition (rtx insn) return gen_rtx_fmt_ee (revcode, GET_MODE (cond), XEXP (cond, 0), XEXP (cond, 1)); } - else - return 0; +#endif + + return 0; } /* Return nonzero if conditions COND1 and COND2 can never be both true. */ |