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authorGinger Bill <bill@gingerbill.org>2016-12-30 16:31:04 +0000
committerGinger Bill <bill@gingerbill.org>2016-12-30 16:31:04 +0000
commit6748f305db791e0b3db3fe567ea44ba96935c7d9 (patch)
tree80baaa903f2242453a4a021c462fa8dd8ece8ebd
parent2ecafda1d34c1157268c94d40c507b98f0070a35 (diff)
select to phi in if expression
-rw-r--r--src/ssa.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/src/ssa.c b/src/ssa.c
index c20b2a4e7..d33627596 100644
--- a/src/ssa.c
+++ b/src/ssa.c
@@ -2654,6 +2654,9 @@ ssaValue *ssa_build_single_expr(ssaProcedure *proc, AstNode *expr, TypeAndValue
ssa_build_stmt(proc, ie->init);
}
+ ssaValueArray edges = {0};
+ array_init_reserve(&edges, proc->module->allocator, 2);
+
GB_ASSERT(ie->else_expr != NULL);
ssaBlock *then = ssa_add_block(proc, expr, "if.then");
ssaBlock *done = ssa_add_block(proc, expr, "if.done"); // NOTE(bill): Append later
@@ -2662,24 +2665,24 @@ ssaValue *ssa_build_single_expr(ssaProcedure *proc, AstNode *expr, TypeAndValue
ssaValue *cond = ssa_build_cond(proc, ie->cond, then, else_);
proc->curr_block = then;
- ssaValue *iv = NULL;
- ssaValue *ev = NULL;
ssa_open_scope(proc);
- iv = ssa_build_expr(proc, ie->body);
+ array_add(&edges, ssa_build_expr(proc, ie->body));
ssa_close_scope(proc, ssaDeferExit_Default, NULL);
ssa_emit_jump(proc, done);
proc->curr_block = else_;
ssa_open_scope(proc);
- ev = ssa_build_expr(proc, ie->else_expr);
+ array_add(&edges, ssa_build_expr(proc, ie->else_expr));
ssa_close_scope(proc, ssaDeferExit_Default, NULL);
ssa_emit_jump(proc, done);
proc->curr_block = done;
- return ssa_emit_select(proc, cond, iv, ev);
+ Type *type = type_of_expr(proc->module->info, expr);
+
+ return ssa_emit(proc, ssa_make_instr_phi(proc, edges, type));
case_end;
case_ast_node(ge, GiveExpr, expr);