[Bug rtl-optimization/66865] [6 Regression] wine64 segfaults from gcc in trunk (r225757) (regression)

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66865

--- Comment #13 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to kugan from comment #12)

> Thanks. I can now reproduce it. However, If I just use the changes to
> gcc/postreload.c (changes for bug 66838), I can get the trunk to work.

I can confrim this with [trunk revision 225805], please see insn @9c, it
reloads %rsi.

0000000000000010 <RtlConvertSidToUnicodeString>:
  10:   55                      push   %rbp
  11:   57                      push   %rdi
  12:   31 c0                   xor    %eax,%eax
  14:   56                      push   %rsi
  15:   53                      push   %rbx
  16:   48 89 d3                mov    %rdx,%rbx
  19:   48 8d 35 00 00 00 00    lea    0(%rip),%rsi        # 20
<RtlConvertSidToUnicodeString+0x10>
                        1c: R_X86_64_PC32       .rodata+0xfffffffffffffffc
  20:   48 81 ec 08 02 00 00    sub    $0x208,%rsp
  27:   0f 29 b4 24 60 01 00    movaps %xmm6,0x160(%rsp)
  2e:   00 
  2f:   48 89 e7                mov    %rsp,%rdi
  32:   48 89 e5                mov    %rsp,%rbp
  35:   0f 29 bc 24 70 01 00    movaps %xmm7,0x170(%rsp)
  3c:   00 
  3d:   44 0f 29 84 24 80 01    movaps %xmm8,0x180(%rsp)
  44:   00 00 
  46:   44 0f 29 8c 24 90 01    movaps %xmm9,0x190(%rsp)
  4d:   00 00 
  4f:   44 0f 29 94 24 a0 01    movaps %xmm10,0x1a0(%rsp)
  56:   00 00 
  58:   44 0f 29 9c 24 b0 01    movaps %xmm11,0x1b0(%rsp)
  5f:   00 00 
  61:   44 0f 29 a4 24 c0 01    movaps %xmm12,0x1c0(%rsp)
  68:   00 00 
  6a:   44 0f 29 ac 24 d0 01    movaps %xmm13,0x1d0(%rsp)
  71:   00 00 
  73:   44 0f 29 b4 24 e0 01    movaps %xmm14,0x1e0(%rsp)
  7a:   00 00 
  7c:   44 0f 29 bc 24 f0 01    movaps %xmm15,0x1f0(%rsp)
  83:   00 00 
  85:   0f b6 12                movzbl (%rdx),%edx
  88:   e8 00 00 00 00          callq  8d <RtlConvertSidToUnicodeString+0x7d>
                        89: R_X86_64_PLT32      sprintfW+0xfffffffffffffffc
  8d:   0f b6 53 03             movzbl 0x3(%rbx),%edx
  91:   0f b6 4b 04             movzbl 0x4(%rbx),%ecx
  95:   48 98                   cltq   
  97:   48 8d 7c 45 00          lea    0x0(%rbp,%rax,2),%rdi
  9c:   48 8d 35 00 00 00 00    lea    0(%rip),%rsi        # a3
<RtlConvertSidToUnicodeString+0x93>
                        9f: R_X86_64_PC32       .rodata+0xfffffffffffffffc
  a3:   31 c0                   xor    %eax,%eax
  a5:   c1 e2 08                shl    $0x8,%edx
  a8:   09 ca                   or     %ecx,%edx
  aa:   0f b6 4b 05             movzbl 0x5(%rbx),%ecx
  ae:   c1 e2 10                shl    $0x10,%edx
  b1:   c1 e1 08                shl    $0x8,%ecx
  b4:   0f b7 c9                movzwl %cx,%ecx
  b7:   09 ca                   or     %ecx,%edx
  b9:   e8 00 00 00 00          callq  be <RtlConvertSidToUnicodeString+0xae>
                        ba: R_X86_64_PLT32      sprintfW+0xfffffffffffffffc
  be:   0f 28 b4 24 60 01 00    movaps 0x160(%rsp),%xmm6
  c5:   00 
  c6:   0f 28 bc 24 70 01 00    movaps 0x170(%rsp),%xmm7
  cd:   00 
  ce:   44 0f 28 84 24 80 01    movaps 0x180(%rsp),%xmm8
  d5:   00 00 
  d7:   44 0f 28 8c 24 90 01    movaps 0x190(%rsp),%xmm9
  de:   00 00 
  e0:   44 0f 28 94 24 a0 01    movaps 0x1a0(%rsp),%xmm10
  e7:   00 00 
  e9:   44 0f 28 9c 24 b0 01    movaps 0x1b0(%rsp),%xmm11
  f0:   00 00 
  f2:   44 0f 28 a4 24 c0 01    movaps 0x1c0(%rsp),%xmm12
  f9:   00 00 
  fb:   44 0f 28 ac 24 d0 01    movaps 0x1d0(%rsp),%xmm13
 102:   00 00 
 104:   44 0f 28 b4 24 e0 01    movaps 0x1e0(%rsp),%xmm14
 10b:   00 00 
 10d:   44 0f 28 bc 24 f0 01    movaps 0x1f0(%rsp),%xmm15
 114:   00 00 
 116:   48 81 c4 08 02 00 00    add    $0x208,%rsp
 11d:   5b                      pop    %rbx
 11e:   5e                      pop    %rsi
 11f:   5f                      pop    %rdi
 120:   5d                      pop    %rbp
 121:   c3                      retq