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[PATCH 3/4] Support movbe as a i386 target optimization node
- From: marxin <mliska at suse dot cz>
- To: gcc-patches at gcc dot gnu dot org
- Cc: jh at suse dot cz
- Date: Thu, 14 Jul 2016 19:20:22 +0200
- Subject: [PATCH 3/4] Support movbe as a i386 target optimization node
- Authentication-results: sourceware.org; auth=none
- References: <cover.1468847683.git.mliska@suse.cz>
- Resent-user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1
gcc/testsuite/ChangeLog:
2016-07-18 Martin Liska <mliska@suse.cz>
* gcc.target/i386/movbe-4.c: New test.
gcc/ChangeLog:
2016-07-18 Martin Liska <mliska@suse.cz>
* config/i386/i386.c (ix86_valid_target_attribute_inner_p):
Handle movbe.
---
gcc/config/i386/i386.c | 1 +
gcc/testsuite/gcc.target/i386/movbe-4.c | 20 ++++++++++++++++++++
2 files changed, 21 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/i386/movbe-4.c
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 493b7e6..8a30cf2 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -6437,6 +6437,7 @@ ix86_valid_target_attribute_inner_p (tree args, char *p_strings[],
IX86_ATTR_ISA ("mmx", OPT_mmmx),
IX86_ATTR_ISA ("pclmul", OPT_mpclmul),
IX86_ATTR_ISA ("popcnt", OPT_mpopcnt),
+ IX86_ATTR_ISA ("movbe", OPT_mmovbe),
IX86_ATTR_ISA ("crc32", OPT_mcrc32),
IX86_ATTR_ISA ("sse", OPT_msse),
IX86_ATTR_ISA ("sse2", OPT_msse2),
diff --git a/gcc/testsuite/gcc.target/i386/movbe-4.c b/gcc/testsuite/gcc.target/i386/movbe-4.c
new file mode 100644
index 0000000..9067091
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/movbe-4.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+#pragma GCC target ("movbe")
+
+extern int x;
+
+void
+foo (int i)
+{
+ x = __builtin_bswap32 (i);
+}
+
+int
+bar ()
+{
+ return __builtin_bswap32 (x);
+}
+
+/* { dg-final { scan-assembler-times "movbe\[ \t\]" 2 } } */
--
2.8.4