https://llvm.org/bugs/show_bug.cgi?id=27501
Bug ID: 27501
Summary: [WinEH] bad instruction ordering with function calls
that might throw
Product: new-bugs
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
When compiling the attached IR with "llc -O1", the resulting application
crashes. It works when compiling with "llc -O0".
The problem seems to be that inside the function _D5sdtor9test10972FZi,
-24(%ebp) is only written after the call to
_D5sdtor9test10972FZ1S15__fieldPostblitMFZv, which can throw, but used later in
code after catching the exception.
.Ltmp2:
leaq -56(%rbp), %rcx
callq _D5sdtor9test10972FZ1S15__fieldPostblitMFZv
.Ltmp3:
movq %rsi, -24(%rbp) # 8-byte Spill
This is built from a test case in the D compiler suite. I can provide a library
to link the snippet, but without further reduction it has size 7MB.
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
llvm-bugs mailing list
[email protected]
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
