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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2015-09-28 08:25:36 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2015-09-28 08:25:36 +0000 |
| commit | 2e73b8fe52035fffbcb666f9017ff06a84dc09cf (patch) | |
| tree | 08374d69589fda69eed1782b4f0d5fa047e43707 /gcc/ifcvt.c | |
| parent | 470512c31b5e078519370ce66fb39a3b6d604392 (diff) | |
| download | gcc-2e73b8fe52035fffbcb666f9017ff06a84dc09cf.zip gcc-2e73b8fe52035fffbcb666f9017ff06a84dc09cf.tar.gz gcc-2e73b8fe52035fffbcb666f9017ff06a84dc09cf.tar.bz2 | |
[RTL-ifcvt] PR rtl-optimization/67481: Look more deeply for CCmode sets during if-covnersion
PR rtl-optimization/67481
* ifcvt.c (contains_ccmode_rtx_p): New function.
(insn_valid_noce_process_p): Use it.
From-SVN: r228195
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index 2b63216..7ab738e 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -1761,6 +1761,19 @@ noce_try_cmove (struct noce_if_info *if_info) return FALSE; } +/* Return true if X contains a conditional code mode rtx. */ + +static bool +contains_ccmode_rtx_p (rtx x) +{ + subrtx_iterator::array_type array; + FOR_EACH_SUBRTX (iter, array, x, ALL) + if (GET_MODE_CLASS (GET_MODE (*iter)) == MODE_CC) + return true; + + return false; +} + /* Helper for bb_valid_for_noce_process_p. Validate that the rtx insn INSN is a single set that does not set the conditional register CC and is in general valid for @@ -1779,6 +1792,7 @@ insn_valid_noce_process_p (rtx_insn *insn, rtx cc) /* Currently support only simple single sets in test_bb. */ if (!sset || !noce_operand_ok (SET_DEST (sset)) + || contains_ccmode_rtx_p (SET_DEST (sset)) || !noce_operand_ok (SET_SRC (sset))) return false; |