From: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date: Fri, 20 May 2016 09:12:59 +0000 (+0000)
Subject: [AArch64] PR target/70809: Delete aarch64_vmls<mode> pattern
X-Git-Tag: releases/gcc-4.9.4~162
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e856982334bcb18fa4d6a9f79cd349221df27f7d;p=thirdparty%2Fgcc.git

[AArch64] PR target/70809: Delete aarch64_vmls<mode> pattern

	Backport from mainline
	2016-05-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	PR target/70809
	* config/aarch64/aarch64-simd.md (aarch64_vmls<mode>): Delete.

	* gcc.target/aarch64/pr70809_1.c: New test.

From-SVN: r236500
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c6d4300d4849..202f3269cf1b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2016-05-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	Backport from mainline
+	2016-05-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/70809
+	* config/aarch64/aarch64-simd.md (aarch64_vmls<mode>): Delete.
+
 2016-05-19  Martin Jambor  <mjambor@suse.cz>
 
 	PR ipa/70646
diff --git a/gcc/config/aarch64/aarch64-simd.md b/gcc/config/aarch64/aarch64-simd.md
index 7626ed31fd68..9776816bfa7c 100644
--- a/gcc/config/aarch64/aarch64-simd.md
+++ b/gcc/config/aarch64/aarch64-simd.md
@@ -1733,16 +1733,6 @@
   }
 )
 
-(define_insn "aarch64_vmls<mode>"
-  [(set (match_operand:VDQF 0 "register_operand" "=w")
-       (minus:VDQF (match_operand:VDQF 1 "register_operand" "0")
-		   (mult:VDQF (match_operand:VDQF 2 "register_operand" "w")
-			      (match_operand:VDQF 3 "register_operand" "w"))))]
-  "TARGET_SIMD"
- "fmls\\t%0.<Vtype>, %2.<Vtype>, %3.<Vtype>"
-  [(set_attr "type" "neon_fp_mla_<Vetype>_scalar<q>")]
-)
-
 ;; FP Max/Min
 ;; Max/Min are introduced by idiom recognition by GCC's mid-end.  An
 ;; expression like:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2d2207aee221..30c17894a8f3 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2016-05-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	Backport from mainline
+	2016-05-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/70809
+	* gcc.target/aarch64/pr70809_1.c: New test.
+
 2016-05-19  Martin Jambor  <mjambor@suse.cz>
 
 	PR ipa/70646
diff --git a/gcc/testsuite/gcc.target/aarch64/pr70809_1.c b/gcc/testsuite/gcc.target/aarch64/pr70809_1.c
new file mode 100644
index 000000000000..2e1bbf4b0902
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/pr70809_1.c
@@ -0,0 +1,18 @@
+/* PR target/70809.  */
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-vectorize -ffp-contract=off -mtune=generic" } */
+
+/* Check that vector FMLS is not generated when contraction is disabled.  */
+
+void
+foo (float *__restrict__ __attribute__ ((aligned (16))) a,
+     float *__restrict__ __attribute__ ((aligned (16))) x,
+     float *__restrict__ __attribute__ ((aligned (16))) y,
+     float *__restrict__ __attribute__ ((aligned (16))) z)
+{
+  unsigned i = 0;
+  for (i = 0; i < 256; i++)
+    a[i] = x[i] - (y[i] * z[i]);
+}
+
+/* { dg-final { scan-assembler-not "fmls\tv.*" } } */