From 13b80a7d1b9b712651f5ece589634a6e57c26362 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Mon, 4 Jan 2021 11:40:40 +0100 Subject: tree-optimization/98282 - classify V_C_E as nary This avoids running into memory reference code in compute_avail by properly classifying unfolded reference trees on constants. 2021-01-04 Richard Biener PR tree-optimization/98282 * tree-ssa-sccvn.c (vn_get_stmt_kind): Classify tcc_reference on invariants as VN_NARY. * g++.dg/opt/pr98282.C: New testcase. --- gcc/tree-ssa-sccvn.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'gcc/tree-ssa-sccvn.c') diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index d944b95..19defc0 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -543,7 +543,8 @@ vn_get_stmt_kind (gimple *stmt) || code == IMAGPART_EXPR || code == VIEW_CONVERT_EXPR || code == BIT_FIELD_REF) - && TREE_CODE (TREE_OPERAND (rhs1, 0)) == SSA_NAME) + && (TREE_CODE (TREE_OPERAND (rhs1, 0)) == SSA_NAME + || is_gimple_min_invariant (TREE_OPERAND (rhs1, 0)))) return VN_NARY; /* Fallthrough. */ -- cgit v1.1