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From b57c55b282e7a9a7b2cc0d3843e58fd7998685e6 Mon Sep 17 00:00:00 2001
From: zhongyunde <zhongyunde@huawei.com>
Date: Fri, 4 Nov 2022 23:19:44 +0800
Subject: [PATCH 23/35] [PHIOPT] Disable the match A?CST1:0 when the CST1 is
negitive value
Fix the regression of gcc.target/aarch64/sve/vcond_3.c
gcc:
* match.pd (A?CST1:CST2): Disable the simplifcations A? (-CST1):0
---
gcc/match.pd | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/match.pd b/gcc/match.pd
index 79a0228d2..fc1a34dd3 100644
--- a/gcc/match.pd
+++ b/gcc/match.pd
@@ -3347,7 +3347,8 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
(if (integer_onep (@1))
(convert (convert:boolean_type_node @0)))
/* a ? powerof2cst : 0 -> a << (log2(powerof2cst)) */
- (if (INTEGRAL_TYPE_P (type) && integer_pow2p (@1))
+ (if (INTEGRAL_TYPE_P (type) && TYPE_UNSIGNED (TREE_TYPE (@1))
+ && integer_pow2p (@1))
(with {
tree shift = build_int_cst (integer_type_node, tree_log2 (@1));
}
--
2.27.0.windows.1
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