From: H.J. Lu <hongjiu.lu@intel.com>
Date: Fri, 5 Oct 2018 11:29:44 +0000 (+0000)
Subject: i386: Don't pass -msse2avx to assembler for -mavx
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ae36de91537f1568e0f50bd55b5b976b8289cdc1;p=gcc.git

i386: Don't pass -msse2avx to assembler for -mavx

With

gcc -O2 -fPIC -flto -g -c -o a.o a.c
gcc -O2 -fPIC -flto -g -mavx   -c -o b.o b.c
gcc -shared -O2 -fPIC -flto -g -o lib1.so a.o b.o

LTO correctly generates AVX for b.o and SSE for a.o.  But the GCC driver
passes -msse2avx to assembler, which encodes SSE instructions as AVX
instructions.  We shouldn't pass -msse2avx to assembler for -mavx.

	PR target/87522
	* config/i386/gnu-user.h (ASM_SPEC): Don't pass -msse2avx to
	assembler for -mavx.
	* config/i386/gnu-user64.h (ASM_SPEC): Likewise.

From-SVN: r264864
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e5575fe9985..e9edd10d8b9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-10-05  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/87522
+	* config/i386/gnu-user.h (ASM_SPEC): Don't pass -msse2avx to
+	assembler for -mavx.
+	* config/i386/gnu-user64.h (ASM_SPEC): Likewise.
+
 2018-10-05  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	PR target/87509
diff --git a/gcc/config/i386/gnu-user.h b/gcc/config/i386/gnu-user.h
index a922c9b93fa..baed87aa54f 100644
--- a/gcc/config/i386/gnu-user.h
+++ b/gcc/config/i386/gnu-user.h
@@ -67,7 +67,7 @@ along with GCC; see the file COPYING3.  If not see
 
 #undef  ASM_SPEC
 #define ASM_SPEC \
-  "--32 %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
+  "--32 %{msse2avx:%{!mavx:-msse2avx}}"
 
 #undef  SUBTARGET_EXTRA_SPECS
 #define SUBTARGET_EXTRA_SPECS \
diff --git a/gcc/config/i386/gnu-user64.h b/gcc/config/i386/gnu-user64.h
index f7a68fdecf0..09141ce3508 100644
--- a/gcc/config/i386/gnu-user64.h
+++ b/gcc/config/i386/gnu-user64.h
@@ -50,7 +50,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #define ASM_SPEC "%{" SPEC_32 ":--32} \
  %{" SPEC_64 ":--64} \
  %{" SPEC_X32 ":--x32} \
- %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
+ %{msse2avx:%{!mavx:-msse2avx}}"
 
 #define GNU_USER_TARGET_LINK_SPEC				   \
                   "%{" SPEC_64 ":-m " GNU_USER_LINK_EMULATION64 "} \