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| author | Zhenqiang Chen <zhenqiang.chen@arm.com> | 2014-11-17 06:29:07 +0000 |
|---|---|---|
| committer | Zhenqiang Chen <zqchen@gcc.gnu.org> | 2014-11-17 06:29:07 +0000 |
| commit | 4696acf0d351041af6c75cf6a33703c0acdbdc76 (patch) | |
| tree | b2395bb473ccd137806864ffd07515289c968e31 /gcc/ifcvt.c | |
| parent | 7dd236702d11b60084560f56b0c3ffdd197c885a (diff) | |
| download | gcc-4696acf0d351041af6c75cf6a33703c0acdbdc76.zip gcc-4696acf0d351041af6c75cf6a33703c0acdbdc76.tar.gz gcc-4696acf0d351041af6c75cf6a33703c0acdbdc76.tar.bz2 | |
ifcvt.c (HAVE_cbranchcc4): Define.
2014-11-17 Zhenqiang Chen <zhenqiang.chen@arm.com>
* ifcvt.c (HAVE_cbranchcc4): Define.
(noce_emit_cmove, noce_get_alt_condition, noce_get_condition):
Use HAVE_cbranchcc4.
From-SVN: r217646
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index f4002f9..21f08c2 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -75,6 +75,10 @@ + 1) #endif +#ifndef HAVE_cbranchcc4 +#define HAVE_cbranchcc4 0 +#endif + #define IFCVT_MULTIPLE_DUMPS 1 #define NULL_BLOCK ((basic_block) NULL) @@ -1459,10 +1463,16 @@ noce_emit_cmove (struct noce_if_info *if_info, rtx x, enum rtx_code code, end_sequence (); } - /* Don't even try if the comparison operands are weird. */ + /* Don't even try if the comparison operands are weird + except that the target supports cbranchcc4. */ if (! general_operand (cmp_a, GET_MODE (cmp_a)) || ! general_operand (cmp_b, GET_MODE (cmp_b))) - return NULL_RTX; + { + if (!(HAVE_cbranchcc4) + || GET_MODE_CLASS (GET_MODE (cmp_a)) != MODE_CC + || cmp_b != const0_rtx) + return NULL_RTX; + } #if HAVE_conditional_move unsignedp = (code == LTU || code == GEU @@ -1909,7 +1919,7 @@ noce_get_alt_condition (struct noce_if_info *if_info, rtx target, } cond = canonicalize_condition (if_info->jump, cond, reverse, - earliest, target, false, true); + earliest, target, HAVE_cbranchcc4, true); if (! cond || ! reg_mentioned_p (target, cond)) return NULL; @@ -2401,7 +2411,7 @@ noce_get_condition (rtx_insn *jump, rtx_insn **earliest, bool then_else_reversed /* Otherwise, fall back on canonicalize_condition to do the dirty work of manipulating MODE_CC values and COMPARE rtx codes. */ tmp = canonicalize_condition (jump, cond, reverse, earliest, - NULL_RTX, false, true); + NULL_RTX, HAVE_cbranchcc4, true); /* We don't handle side-effects in the condition, like handling REG_INC notes and making sure no duplicate conditions are emitted. */ |