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| author | Paolo Bonzini <bonzini@gnu.org> | 2005-03-21 14:30:51 +0000 |
|---|---|---|
| committer | Paolo Bonzini <bonzini@gcc.gnu.org> | 2005-03-21 14:30:51 +0000 |
| commit | 9ce921aba837a0775de9abb3ea97e57d30f25e1f (patch) | |
| tree | 681954762b33192c42f1a60a5211b189369f90af /gcc/simplify-rtx.c | |
| parent | 0a04ccc5712075b82b95dec4f52b4e9dc3303cd1 (diff) | |
| download | gcc-9ce921aba837a0775de9abb3ea97e57d30f25e1f.zip gcc-9ce921aba837a0775de9abb3ea97e57d30f25e1f.tar.gz gcc-9ce921aba837a0775de9abb3ea97e57d30f25e1f.tar.bz2 | |
rtl.h (struct rtx_hooks): Add gen_lowpart_no_emit.
2005-03-21 Paolo Bonzini <bonzini@gnu.org>
* rtl.h (struct rtx_hooks): Add gen_lowpart_no_emit.
* rtlhooks.c (gen_lowpart_no_emit_general): New.
* rtlhooks-def.h (gen_lowpart_no_emit_general): Declare.
(RTL_HOOKS_GEN_LOWPART_NO_EMIT): New.
* simplify-rtx.c (simplify_binary_operation_1): Use it.
From-SVN: r96799
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 25 |
1 files changed, 3 insertions, 22 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 2f7ae25..a703331 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1704,15 +1704,7 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode, : const0_rtx; /* x/1 is x. */ if (trueop1 == const1_rtx) - { - /* Handle narrowing UDIV. */ - rtx x = gen_lowpart_common (mode, op0); - if (x) - return x; - if (mode != GET_MODE (op0) && GET_MODE (op0) != VOIDmode) - return gen_lowpart_SUBREG (mode, op0); - return op0; - } + return rtl_hooks.gen_lowpart_no_emit (mode, op0); /* Convert divide by power of two into shift. */ if (GET_CODE (trueop1) == CONST_INT && (val = exact_log2 (INTVAL (trueop1))) > 0) @@ -1768,22 +1760,11 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode, : const0_rtx; /* x/1 is x. */ if (trueop1 == const1_rtx) - { - /* Handle narrowing DIV. */ - rtx x = gen_lowpart_common (mode, op0); - if (x) - return x; - if (mode != GET_MODE (op0) && GET_MODE (op0) != VOIDmode) - return gen_lowpart_SUBREG (mode, op0); - return op0; - } + return rtl_hooks.gen_lowpart_no_emit (mode, op0); /* x/-1 is -x. */ if (trueop1 == constm1_rtx) { - rtx x = gen_lowpart_common (mode, op0); - if (!x) - x = (mode != GET_MODE (op0) && GET_MODE (op0) != VOIDmode) - ? gen_lowpart_SUBREG (mode, op0) : op0; + rtx x = rtl_hooks.gen_lowpart_no_emit (mode, op0); return simplify_gen_unary (NEG, mode, x, mode); } } |