From 974bb8a4dcbf51a153ab72da91a7256a296e7fa1 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Fri, 10 Jan 2020 22:10:03 +0100
Subject: [PATCH] re PR tree-optimization/90838 (Detect table-based ctz
implementation)
PR tree-optimization/90838
* tree-ssa-forwprop.c (simplify_count_trailing_zeroes): Use
SCALAR_INT_TYPE_MODE instead of TYPE_MODE as operand of
CTZ_DEFINED_VALUE_AT_ZERO.
From-SVN: r280140
---
gcc/ChangeLog | 7 +++++++
gcc/tree-ssa-forwprop.c | 3 ++-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 24b5c971e5e7..5471c9f40415 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2020-01-10 Jakub Jelinek <jakub@redhat.com>
+
+ PR tree-optimization/90838
+ * tree-ssa-forwprop.c (simplify_count_trailing_zeroes): Use
+ SCALAR_INT_TYPE_MODE instead of TYPE_MODE as operand of
+ CTZ_DEFINED_VALUE_AT_ZERO.
+
2020-01-10 Vladimir Makarov <vmakarov@redhat.com>
PR inline-asm/93027
diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c
index aced6eb2d913..aac31d02b6c2 100644
--- a/gcc/tree-ssa-forwprop.c
+++ b/gcc/tree-ssa-forwprop.c
@@ -1922,7 +1922,8 @@ simplify_count_trailing_zeroes (gimple_stmt_iterator *gsi)
tree type = TREE_TYPE (res_ops[0]);
HOST_WIDE_INT ctzval;
HOST_WIDE_INT type_size = tree_to_shwi (TYPE_SIZE (type));
- bool zero_ok = CTZ_DEFINED_VALUE_AT_ZERO (TYPE_MODE (type), ctzval) == 2;
+ scalar_int_mode mode = SCALAR_INT_TYPE_MODE (type);
+ bool zero_ok = CTZ_DEFINED_VALUE_AT_ZERO (mode, ctzval) == 2;
/* Skip if there is no value defined at zero, or if we can't easily
return the correct value for zero. */
--
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