diff options
Diffstat (limited to 'gcc/tree-ssa-sink.c')
| -rw-r--r-- | gcc/tree-ssa-sink.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-ssa-sink.c b/gcc/tree-ssa-sink.c index f7485ef..fb7310d 100644 --- a/gcc/tree-ssa-sink.c +++ b/gcc/tree-ssa-sink.c @@ -374,6 +374,12 @@ statement_sink_location (gimple stmt, basic_block frombb, nearest to commondom. */ if (gimple_vuse (stmt)) { + /* Do not sink loads from hard registers. */ + if (gimple_assign_single_p (stmt) + && TREE_CODE (gimple_assign_rhs1 (stmt)) == VAR_DECL + && DECL_HARD_REGISTER (gimple_assign_rhs1 (stmt))) + return false; + imm_use_iterator imm_iter; use_operand_p use_p; basic_block found = NULL; |