From: Ganesh Gopalasubramanian <Ganesh.Gopalasubramanian@amd.com>
Date: Mon, 16 Jun 2014 11:02:31 +0000 (+0000)
Subject: Remove vpmacsdql instruction from multiplication
X-Git-Tag: releases/gcc-5.1.0~6850
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2bd4bfee7e16cf608ae6e16c669e265bce635d48;p=thirdparty%2Fgcc.git

Remove vpmacsdql instruction from multiplication

From-SVN: r211702
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 802f3d93c28d..7f242f2f0afc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2014-06-16  Ganesh Gopalasubramanian <Ganesh.Gopalasubramanian@amd.com>
+
+	* config/i386/i386.c (ix86_expand_sse2_mulvxdi3): Issue 
+	instructions "vpmuludq" and "vpaddq" instead of "vpmacsdql" for 
+	handling 32-bit multiplication.
+
 2014-06-16  Chung-Lin Tang  <cltang@codesourcery.com>
 
 	PR middle-end/61430
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index d46f5832ecad..33226a9f9354 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -45279,8 +45279,13 @@ ix86_expand_sse2_mulvxdi3 (rtx op0, rtx op1, rtx op2)
       /* t4: ((B*E)+(A*F))<<32, ((D*G)+(C*H))<<32 */
       emit_insn (gen_ashlv2di3 (t4, t3, GEN_INT (32)));
 
-      /* op0: (((B*E)+(A*F))<<32)+(B*F), (((D*G)+(C*H))<<32)+(D*H) */
-      emit_insn (gen_xop_pmacsdql (op0, op1, op2, t4));
+      /* Multiply lower parts and add all */
+      t5 = gen_reg_rtx (V2DImode);
+      emit_insn (gen_vec_widen_umult_even_v4si (t5, 
+					gen_lowpart (V4SImode, op1),
+					gen_lowpart (V4SImode, op2)));
+      op0 = expand_binop (mode, add_optab, t5, t4, op0, 1, OPTAB_DIRECT);
+
     }
   else
     {
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 684eb7b669d9..b417245646ad 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2014-06-16 Ganesh Gopalasubramanian  <Ganesh.Gopalasubramanian@amd.com>
+
+	* gcc.target/i386/xop-imul64-vector.c: Remove the check for
+	vpmacsdql instruction.
+
 2014-06-16  Yury Gribov  <y.gribov@samsung.com>
 
 	* c-c++-common/asan/instrument-with-calls-1.c: New test.
diff --git a/gcc/testsuite/gcc.target/i386/xop-imul64-vector.c b/gcc/testsuite/gcc.target/i386/xop-imul64-vector.c
index fbf605f31ec0..fc8c8806f78c 100644
--- a/gcc/testsuite/gcc.target/i386/xop-imul64-vector.c
+++ b/gcc/testsuite/gcc.target/i386/xop-imul64-vector.c
@@ -33,4 +33,3 @@ int main ()
 
 /* { dg-final { scan-assembler "vpmulld" } } */
 /* { dg-final { scan-assembler "vphadddq" } } */
-/* { dg-final { scan-assembler "vpmacsdql" } } */