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| author | Aldy Hernandez <aldyh@redhat.com> | 2004-04-12 00:52:24 +0000 |
|---|---|---|
| committer | Aldy Hernandez <aldyh@gcc.gnu.org> | 2004-04-12 00:52:24 +0000 |
| commit | fef98bf2f80d3a7cc5be10676164afa80ed273fa (patch) | |
| tree | 4c1866ee420997bf7be1f9be76a5667af4ce2810 /gcc | |
| parent | 034776f6f640dd07587a23f29483987fbfc6417f (diff) | |
| download | gcc-fef98bf2f80d3a7cc5be10676164afa80ed273fa.zip gcc-fef98bf2f80d3a7cc5be10676164afa80ed273fa.tar.gz gcc-fef98bf2f80d3a7cc5be10676164afa80ed273fa.tar.bz2 | |
rs6000.md: Document why a pattern is not available.
* config/rs6000/rs6000.md: Document why a pattern is not
available.
* config/rs6000/rs6000.c (rs6000_emit_cmove): Disable comparisons
of floats on the E500.
(branch_positive_comparison_operator): Do not allow NE even on the
E500.
From-SVN: r80617
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 10 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 4 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 2 |
3 files changed, 15 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1f41f58..94c8ab5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,15 @@ 2004-04-11 Aldy Hernandez <aldyh@redhat.com> + * config/rs6000/rs6000.md: Document why a pattern is not + available. + + * config/rs6000/rs6000.c (rs6000_emit_cmove): Disable comparisons + of floats on the E500. + (branch_positive_comparison_operator): Do not allow NE even on the + E500. + +2004-04-11 Aldy Hernandez <aldyh@redhat.com> + * config/rs6000/rs6000.c (rs6000_assemble_integer): Change in_text_unlikely_section to in_unlikely_text_section. diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index ada5aab..b3a7364 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -8376,7 +8376,6 @@ branch_positive_comparison_operator (rtx op, enum machine_mode mode) code = GET_CODE (op); return (code == EQ || code == LT || code == GT - || (TARGET_E500 && TARGET_HARD_FLOAT && !TARGET_FPRS && code == NE) || code == LTU || code == GTU || code == UNORDERED); } @@ -10195,6 +10194,9 @@ rs6000_emit_cmove (rtx dest, rtx op, rtx true_cond, rtx false_cond) return rs6000_emit_int_cmove (dest, op, true_cond, false_cond); return 0; } + else if (TARGET_E500 && TARGET_HARD_FLOAT && !TARGET_FPRS + && GET_MODE_CLASS (compare_mode) == MODE_FLOAT) + return 0; /* Eliminate half of the comparisons by switching operands, this makes the remaining code simpler. */ diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 921ed63..4e96548 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -13666,6 +13666,8 @@ "cc_reg_operand" "0,y") (const_int 0)]) (const_int 0)))] + ;; This pattern is not available to SPE because the CR bits on an FP + ;; compare are different than traditional PPC. "!TARGET_SPE" "{crnor %E0,%j1,%j1|crnot %E0,%j1}" [(set_attr "type" "cr_logical,delayed_cr")]) |