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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 1996-06-04 18:13:21 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 1996-06-04 18:13:21 +0000 |
| commit | e4fa6b06f01a3b6074ff446d948e705dccf2af96 (patch) | |
| tree | abd60dd9ceeb3110ef0f5bbe98e1e42417b18cc0 /gcc/config/sh | |
| parent | 446b03afbb0bc351c36a92c103d68e83f0f57937 (diff) | |
| download | gcc-e4fa6b06f01a3b6074ff446d948e705dccf2af96.zip gcc-e4fa6b06f01a3b6074ff446d948e705dccf2af96.tar.gz gcc-e4fa6b06f01a3b6074ff446d948e705dccf2af96.tar.bz2 | |
Align code at the start of loops and after branches.
Align code at the start of loops and after branches. Don't accept
negative zero in fp_zero_operand.
From-SVN: r12155
Diffstat (limited to 'gcc/config/sh')
| -rw-r--r-- | gcc/config/sh/sh.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 3bad072..d3f1e0f 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -552,8 +552,16 @@ output_branch (logic, insn, operands) rtx *operands; { int label = lf++; + int length = get_attr_length (insn); + int adjusted_length; - switch (get_attr_length (insn)) + /* Undo the effects of ADJUST_INSN_LENGTH, so that we get the real + length. */ + adjusted_length = length; + ADJUST_INSN_LENGTH (insn, adjusted_length); + length -= (adjusted_length - length); + + switch (length) { case 2: /* A branch with an unfilled delay slot. */ @@ -626,7 +634,8 @@ output_branch (logic, insn, operands) } return ""; } - return "bad"; + + abort (); } /* Output to FILE the start of the assembler file. */ @@ -1206,6 +1215,27 @@ find_barrier (from) hi_limit = 500; } + /* If not optimizing for space, then the constant pool will be + aligned to a 4 to 16 byte boundary. We must make room for that + alignment that by reducing the limits. + ??? It would be better to not align the constant pool, but + ASM_OUTPUT_ALIGN_CODE does not make any provision for basing the + alignment on the instruction. */ + + if (! TARGET_SMALLCODE) + { + if (TARGET_SH3 || TARGET_SH3E) + { + si_limit -= 14; + hi_limit -= 14; + } + else + { + si_limit -= 2; + hi_limit -= 2; + } + } + while (from && count_si < si_limit && count_hi < hi_limit) { int inc = get_attr_length (from); @@ -2228,7 +2258,7 @@ fp_zero_operand (op) return 0; REAL_VALUE_FROM_CONST_DOUBLE (r, op); - return REAL_VALUES_EQUAL (r, dconst0); + return REAL_VALUES_EQUAL (r, dconst0) && ! REAL_VALUE_MINUS_ZERO (r); } /* Nonzero if OP is a floating point value with value 1.0. */ |