diff options
Diffstat (limited to 'gcc/tree-ssa-phiopt.c')
| -rw-r--r-- | gcc/tree-ssa-phiopt.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/gcc/tree-ssa-phiopt.c b/gcc/tree-ssa-phiopt.c index 90674a2..7088ff9 100644 --- a/gcc/tree-ssa-phiopt.c +++ b/gcc/tree-ssa-phiopt.c @@ -504,7 +504,24 @@ factor_out_conditional_conversion (edge e0, edge e1, gphi *phi, gsi = gsi_for_stmt (arg0_def_stmt); gsi_prev_nondebug (&gsi); if (!gsi_end_p (gsi)) - return NULL; + { + if (gassign *assign + = dyn_cast <gassign *> (gsi_stmt (gsi))) + { + tree lhs = gimple_assign_lhs (assign); + enum tree_code ass_code + = gimple_assign_rhs_code (assign); + if (ass_code != MAX_EXPR && ass_code != MIN_EXPR) + return NULL; + if (lhs != gimple_assign_rhs1 (arg0_def_stmt)) + return NULL; + gsi_prev_nondebug (&gsi); + if (!gsi_end_p (gsi)) + return NULL; + } + else + return NULL; + } gsi = gsi_for_stmt (arg0_def_stmt); gsi_next_nondebug (&gsi); if (!gsi_end_p (gsi)) |