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
