http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46519
Summary: Missing vzeroupper
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: hjl.to...@gmail.com
CC: ubiz...@gmail.com
Created attachment 22430
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22430
A testcase
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -O3 -funroll-loops -ffast-math
-mavx -Wno-multichar -S bad.c
.L531:
vmovapd %ymm0, (%rsp)
vzeroupper
call Get_Token
movl Token_Id(%rip), %eax
vmovapd (%rsp), %ymm0
cmpl $1, %eax
je .L139
cmpl $2, %eax
je .L541
L171:
vmovsd (%rax), %xmm9
vsubsd 32(%rsp,%rcx,8), %xmm9, %xmm8
leal 1(%rdx), %ecx
cmpl %ecx, %esi
vmovsd %xmm8, (%rax)
jg .L543
jmp .L531
.p2align 4,,10
.p2align 3
.L541:
leaq 80(%rsp), %rsi
movq %r12, %rdi
call Parse_Num_Term <<<< missing vzeroupper
movl 0(%r13), %esi
movl 80(%rsp), %eax
vmovapd (%rsp), %ymm0
cmpl %eax, %esi
