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[PATCH 1/3][POPCOUNT] Handle COND_EXPR in expression_expensive_p
- From: Kugan Vivekanandarajah <kugan dot vivekanandarajah at linaro dot org>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Fri, 22 Jun 2018 19:12:55 +1000
- Subject: [PATCH 1/3][POPCOUNT] Handle COND_EXPR in expression_expensive_p
[PATCH 1/3][POPCOUNT] Handle COND_EXPR in expression_expensive_p
gcc/ChangeLog:
2018-06-22 Kugan Vivekanandarajah <kuganv@linaro.org>
* tree-scalar-evolution.c (expression_expensive_p): Handle COND_EXPR.
From aa38b98dd97567c6032c261f19b3705abc2233b0 Mon Sep 17 00:00:00 2001
From: Kugan Vivekanandarajah <kugan.vivekanandarajah@linaro.org>
Date: Fri, 22 Jun 2018 14:10:26 +1000
Subject: [PATCH 1/3] generate popcount when checked for zero
Change-Id: I7255bf35e28222f7418852cb232246edf1fb5a39
---
gcc/tree-scalar-evolution.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/gcc/tree-scalar-evolution.c b/gcc/tree-scalar-evolution.c
index 4b0ec02..db419a4 100644
--- a/gcc/tree-scalar-evolution.c
+++ b/gcc/tree-scalar-evolution.c
@@ -3508,6 +3508,11 @@ expression_expensive_p (tree expr)
return false;
}
+ if (code == COND_EXPR)
+ return (expression_expensive_p (TREE_OPERAND (expr, 0))
+ || expression_expensive_p (TREE_OPERAND (expr, 1))
+ || expression_expensive_p (TREE_OPERAND (expr, 2)));
+
switch (TREE_CODE_CLASS (code))
{
case tcc_binary:
--
2.7.4