From: Jakub Jelinek <jakub@redhat.com>
Date: Mon, 9 Sep 2019 11:44:17 +0000 (+0200)
Subject: re PR target/87853 (_mm_cmpgt_epi8 broken with -funsigned-char)
X-Git-Tag: releases/gcc-7.5.0~135
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7fd1e6110d0eb0755e15a55f3895f48dff4a3777;p=thirdparty%2Fgcc.git

re PR target/87853 (_mm_cmpgt_epi8 broken with -funsigned-char)

	PR target/87853
	* config/i386/emmintrin.h (_mm_cmpeq_epi8): Use casts to __v16qi
	instead of __v16qs.

	* gcc.target/i386/pr87853.c: New test.

From-SVN: r275516
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 94541446508c..18be6a493ce6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2019-09-09  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/87853
+	* config/i386/emmintrin.h (_mm_cmpeq_epi8): Use casts to __v16qi
+	instead of __v16qs.
+
 	PR target/91704
 	* config/i386/avxintrin.h (__v32qs): New typedef.
 	* config/i386/avx2intrin.h (_mm256_cmpgt_epi8): Use casts to __v32qs
diff --git a/gcc/config/i386/emmintrin.h b/gcc/config/i386/emmintrin.h
index c35a20f71078..3c0104f6abdf 100644
--- a/gcc/config/i386/emmintrin.h
+++ b/gcc/config/i386/emmintrin.h
@@ -1296,7 +1296,7 @@ _mm_xor_si128 (__m128i __A, __m128i __B)
 extern __inline __m128i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
 _mm_cmpeq_epi8 (__m128i __A, __m128i __B)
 {
-  return (__m128i) ((__v16qs)__A == (__v16qs)__B);
+  return (__m128i) ((__v16qi)__A == (__v16qi)__B);
 }
 
 extern __inline __m128i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d5064f48cca3..24272ee404cb 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2019-09-09  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/87853
+	* gcc.target/i386/pr87853.c: New test.
+
 	PR target/91704
 	* gcc.target/i386/pr91704.c: New test.
 
diff --git a/gcc/testsuite/gcc.target/i386/pr87853.c b/gcc/testsuite/gcc.target/i386/pr87853.c
new file mode 100644
index 000000000000..9a288879679a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr87853.c
@@ -0,0 +1,20 @@
+/* PR target/87853 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -funsigned-char -msse2 -mno-sse3 -masm=att" } */
+/* { dg-final { scan-assembler-times "\tpcmpgtb\t%xmm" 2 } } */
+/* { dg-final { scan-assembler-not "\tpsubusb\t" } } */
+/* { dg-final { scan-assembler-not "\tpcmpeqb\t" } } */
+
+#include <x86intrin.h>
+
+__m128i
+foo (__m128i x, __m128i y)
+{
+  return _mm_cmpgt_epi8 (x, y);
+}
+
+__m128i
+bar (__m128i x, __m128i y)
+{
+  return _mm_cmplt_epi8 (x, y);
+}