https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114591
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #2)
> This changed with r12-5584-gca5667e867252db3c8642ee90f55427149cd92b6
Strange, if I revert the constraints to the previous setting with:
--cut here--
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 10ae3113ae8..262dd25a8e0 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -2870,9 +2870,9 @@ (define_peephole2
(define_insn "*movhi_internal"
[(set (match_operand:HI 0 "nonimmediate_operand"
- "=r,r,r,m ,*k,*k ,r ,m ,*k ,?r,?*v,*Yv,*v,*v,jm,m")
+ "=r,r,r,m ,*k,*k ,*r ,*m ,*k ,?r,?v,*Yv,*v,*v,*jm,*m")
(match_operand:HI 1 "general_operand"
- "r ,n,m,rn,r ,*km,*k,*k,CBC,*v,r ,C ,*v,m ,*x,*v"))]
+ "r ,n,m,rn,*r ,*km,*k,*k,CBC,v,r ,C ,v,m ,x,v"))]
"!(MEM_P (operands[0]) && MEM_P (operands[1]))
&& ix86_hardreg_mov_ok (operands[0], operands[1])"
{
--cut here--
I still get:
movl v1(%rip), %eax # 6 [c=6 l=6] *zero_extendsidi2/3
movq %rax, v2(%rip) # 16 [c=4 l=7] *movdi_internal/5
movzwl v1(%rip), %eax # 7 [c=5 l=7] *movhi_internal/2
