diff options
| author | wschmidt <wschmidt@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-06-13 12:33:55 +0000 |
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| committer | wschmidt <wschmidt@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-06-13 12:33:55 +0000 |
| commit | 6f0ddab12afc5d7427c48bc7d9c26e3629875bd5 (patch) | |
| tree | 7319899bbd978efd17dfe32407a4db522cad804b /gcc/tree-ssa-phiopt.c | |
| parent | d13adc778dc54efc4fdd0aba6c72a6e50296bf08 (diff) | |
| download | gcc-6f0ddab12afc5d7427c48bc7d9c26e3629875bd5.tar.gz | |
2012-06-13 Bill Schmidt <wschmidt@linux.ibm.com>
PR tree-optimization/53647
* tree-ssa-phiopt.c (gate_hoist_loads): Skip transformation for
targets with no defined cache line size.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@188509 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-phiopt.c')
| -rw-r--r-- | gcc/tree-ssa-phiopt.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/tree-ssa-phiopt.c b/gcc/tree-ssa-phiopt.c index 6e47f6f85b3..c64e8e2a984 100644 --- a/gcc/tree-ssa-phiopt.c +++ b/gcc/tree-ssa-phiopt.c @@ -1976,12 +1976,14 @@ hoist_adjacent_loads (basic_block bb0, basic_block bb1, /* Determine whether we should attempt to hoist adjacent loads out of diamond patterns in pass_phiopt. Always hoist loads if -fhoist-adjacent-loads is specified and the target machine has - a conditional move instruction. */ + both a conditional move instruction and a defined cache line size. */ static bool gate_hoist_loads (void) { - return (flag_hoist_adjacent_loads == 1 && HAVE_conditional_move); + return (flag_hoist_adjacent_loads == 1 + && PARAM_VALUE (PARAM_L1_CACHE_LINE_SIZE) + && HAVE_conditional_move); } /* Always do these optimizations if we have SSA |