http://llvm.org/bugs/show_bug.cgi?id=15286
Bug ID: 15286
Summary: VACOPY intrinsic misbehaves on PPC32
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: PowerPC
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Using va_copy on ppc32 with the SVR4 ABI currently causes strange behaviour
when using the copied list.
It appears the reason is that ppc32 needs custom lowering here.
While the default implementation only copies the pointer to the va_list struct
for ppc32 the actual struct needs to be copied (va_arg changes the struct).
I've fixed this in my local copy by stealing the AArch64 code and adapting it
to copy only 12 bytes.
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