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| author | J"orn Rennecke <amylaar@redhat.com> | 2000-11-02 19:22:04 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2000-11-02 19:22:04 +0000 |
| commit | 0192d704659dcc776b2365fa03415ce24f5c0af1 (patch) | |
| tree | 0739d56cb7eafb4b7b799a0124f3a2362d311e43 | |
| parent | 9473c5226bfe4c2a3d0045028921a00a167e5c40 (diff) | |
| download | gcc-0192d704659dcc776b2365fa03415ce24f5c0af1.zip gcc-0192d704659dcc776b2365fa03415ce24f5c0af1.tar.gz gcc-0192d704659dcc776b2365fa03415ce24f5c0af1.tar.bz2 | |
reload.c (find_equiv_reg): Test all hard registers for membership in the requested class.
* reload.c (find_equiv_reg): Test all hard registers for membership
in the requested class.
From-SVN: r37207
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/reload.c | 33 |
2 files changed, 28 insertions, 10 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c6b37df..17674be 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Thu Nov 2 19:20:12 2000 J"orn Rennecke <amylaar@redhat.com> + + * reload.c (find_equiv_reg): Test all hard registers for membership + in the requested class. + 2000-11-02 Joseph S. Myers <jsm28@cam.ac.uk> * collect2.c (main, write_c_file_stat), gcc.c (translate_options, diff --git a/gcc/reload.c b/gcc/reload.c index f3933b1..57ff486 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -6185,16 +6185,29 @@ find_equiv_reg (goal, insn, class, other, reload_reg_p, goalreg, mode) && (valtry = operand_subword (SET_DEST (pat), 1, 0, VOIDmode)) && (valueno = true_regnum (valtry)) >= 0))) - if (other >= 0 - ? valueno == other - : ((unsigned) valueno < FIRST_PSEUDO_REGISTER - && TEST_HARD_REG_BIT (reg_class_contents[(int) class], - valueno))) - { - value = valtry; - where = p; - break; - } + { + if (other >= 0) + { + if (valueno != other) + continue; + } + else if ((unsigned) valueno >= FIRST_PSEUDO_REGISTER) + continue; + else + { + int i; + + for (i = HARD_REGNO_NREGS (valueno, mode) - 1; i >= 0; i--) + if (! TEST_HARD_REG_BIT (reg_class_contents[(int) class], + valueno + i)) + break; + if (i >= 0) + continue; + } + value = valtry; + where = p; + break; + } } } |