[llvm-bugs] [Bug 26412] New: vzeroupper is generated in interrupt handler

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26412

            Bug ID: 26412
           Summary: vzeroupper is generated in interrupt handler
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: hjl.tools at gmail.com
                CC: kevin.b.smith at intel.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

[hjl at gnu-6 interrupt-8]$ cat s.i
extern void foo (void *) __attribute__ ((interrupt));
extern void bar (void);

void foo (void *frame)
{
  bar ();
}
[hjl at gnu-6 interrupt-8]$ make s.s
/export/build/gnu/llvm-clang-bootstrap/stage1/build-x86_64-linux/bin/clang -O2
-Wall -march=nehalem -mavx -S -o s.s s.i
[hjl at gnu-6 interrupt-8]$ grep vzero s.s
    vzeroupper
[hjl at gnu-6 interrupt-8]$

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20160201/daea20e0/attachment.html>