From c1ee2e626ea59d8ba14a1d2f36621a2fe525320a Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 13 May 2015 10:07:58 +0200
Subject: re PR target/66112 (__builtin_mul_overflow for int16_t emits poor
 code)

	PR target/66112
	* internal-fn.c (get_min_precision): Use UNSIGNED instead of
	SIGNED to get precision of non-negative value.

	* gcc.target/i386/pr66112-1.c: New test.

From-SVN: r223115
---
 gcc/internal-fn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'gcc/internal-fn.c')

diff --git a/gcc/internal-fn.c b/gcc/internal-fn.c
index 0053ed9..4eeb681 100644
--- a/gcc/internal-fn.c
+++ b/gcc/internal-fn.c
@@ -399,7 +399,7 @@ get_min_precision (tree arg, signop sign)
     }
   else if (sign == UNSIGNED && !wi::neg_p (arg_min, SIGNED))
     {
-      int p = wi::min_precision (arg_max, SIGNED);
+      int p = wi::min_precision (arg_max, UNSIGNED);
       prec = MIN (prec, p);
     }
   return prec + (orig_sign != sign);
-- 
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