[X86] Cleanup 'x' and 'y' mnemonic suffixes for vcvtpd2dq/vcvttpd2dq/vcvtpd2ps and similar instructions.

-Don't print the 'x' suffix for the 128-bit reg/mem VEX encoded instructions in Intel syntax. This is consistent with the EVEX versions.
-Don't print the 'y' suffix for the 256-bit reg/reg VEX encoded instructions in Intel or AT&T syntax. This is consistent with the EVEX versions.
-Allow the 'x' and 'y' suffixes to be used for the reg/mem forms when we're assembling using Intel syntax.
-Allow the 'x' and 'y' suffixes on the reg/reg EVEX encoded instructions in Intel or AT&T syntax. This is consistent with what VEX was already allowing.

This should fix at least some of PR28850.

llvm-svn: 286787

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/test/CodeGen/X86/fp-trunc.ll b/llvm/test/CodeGen/X86/fp-trunc.ll
index b1ffd5a6530..2f700cd4cc7 100644
--- a/llvm/test/CodeGen/X86/fp-trunc.ll
+++ b/llvm/test/CodeGen/X86/fp-trunc.ll
@@ -50,7 +50,7 @@ define <4 x float> @test3(<4 x double> %x) nounwind {
 ;
 ; AVX-LABEL: test3:
 ; AVX:       # BB#0:
-; AVX-NEXT:    vcvtpd2psy %ymm0, %xmm0
+; AVX-NEXT:    vcvtpd2ps %ymm0, %xmm0
 ; AVX-NEXT:    vzeroupper
 ; AVX-NEXT:    retl
   %y = fptrunc <4 x double> %x to <4 x float>
@@ -72,8 +72,8 @@ define <8 x float> @test4(<8 x double> %x) nounwind {
 ;
 ; AVX-LABEL: test4:
 ; AVX:       # BB#0:
-; AVX-NEXT:    vcvtpd2psy %ymm0, %xmm0
-; AVX-NEXT:    vcvtpd2psy %ymm1, %xmm1
+; AVX-NEXT:    vcvtpd2ps %ymm0, %xmm0
+; AVX-NEXT:    vcvtpd2ps %ymm1, %xmm1
 ; AVX-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
 ; AVX-NEXT:    retl
   %y = fptrunc <8 x double> %x to <8 x float>