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| author | Zhenqiang Chen <zhenqiang.chen@arm.com> | 2014-09-09 05:30:36 +0000 |
|---|---|---|
| committer | Zhenqiang Chen <zqchen@gcc.gnu.org> | 2014-09-09 05:30:36 +0000 |
| commit | a5e022d5d6b2921c5e4ca19bc366d87dd0195d01 (patch) | |
| tree | fa424604153880fba58f911b58a8fd6e973ae8d9 /gcc/ifcvt.c | |
| parent | 157e859ffe3b5d43db1e19475711c1a3d21ab57a (diff) | |
| download | gcc-a5e022d5d6b2921c5e4ca19bc366d87dd0195d01.zip gcc-a5e022d5d6b2921c5e4ca19bc366d87dd0195d01.tar.gz gcc-a5e022d5d6b2921c5e4ca19bc366d87dd0195d01.tar.bz2 | |
shrink-wrap.h: #define SHRINK_WRAPPING_ENABLED.
ChangeLog:
2014-09-09 Zhenqiang Chen <zhenqiang.chen@arm.com>
* shrink-wrap.h: #define SHRINK_WRAPPING_ENABLED.
* ira.c: #include "shrink-wrap.h"
(split_live_ranges_for_shrink_wrap): Use SHRINK_WRAPPING_ENABLED.
* ifcvt.c: #include "shrink-wrap.h"
(dead_or_predicable): Use SHRINK_WRAPPING_ENABLED.
testsuite/ChangeLog:
2014-09-09 Zhenqiang Chen <zhenqiang.chen@arm.com>
* gcc.target/arm/split-live-ranges-for-shrink-wrap.c: New test.
From-SVN: r215041
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index bce9fb3..ed30a59 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -42,6 +42,7 @@ #include "df.h" #include "vec.h" #include "dbgcnt.h" +#include "shrink-wrap.h" #ifndef HAVE_conditional_move #define HAVE_conditional_move 0 @@ -4288,14 +4289,13 @@ dead_or_predicable (basic_block test_bb, basic_block merge_bb, if (NONDEBUG_INSN_P (insn)) df_simulate_find_defs (insn, merge_set); -#ifdef HAVE_simple_return /* If shrink-wrapping, disable this optimization when test_bb is the first basic block and merge_bb exits. The idea is to not move code setting up a return register as that may clobber a register used to pass function parameters, which then must be saved in caller-saved regs. A caller-saved reg requires the prologue, killing a shrink-wrap opportunity. */ - if ((flag_shrink_wrap && HAVE_simple_return && !epilogue_completed) + if ((SHRINK_WRAPPING_ENABLED && !epilogue_completed) && ENTRY_BLOCK_PTR_FOR_FN (cfun)->next_bb == test_bb && single_succ_p (new_dest) && single_succ (new_dest) == EXIT_BLOCK_PTR_FOR_FN (cfun) @@ -4342,7 +4342,6 @@ dead_or_predicable (basic_block test_bb, basic_block merge_bb, } BITMAP_FREE (return_regs); } -#endif } no_body: |