Andrew Trick 05938a5481 AArch64: Safely handle the incoming sret call argument. ...

This adds a safe interface to the machine independent InputArg struct
for accessing the index of the original (IR-level) argument. When a
non-native return type is lowered, we generate the hidden
machine-level sret argument on-the-fly. Before this fix, we were
representing this argument as OrigArgIndex == 0, which is an outright
lie. In particular this crashed in the AArch64 backend where we
actually try to access the type of the original argument.

Now we use a sentinel value for machine arguments that have no
original argument index. AArch64, ARM, Mips, and PPC now check for this
case before accessing the original argument.

Fixes <rdar://19792160> Null pointer assertion in AArch64TargetLowering

llvm-svn: 229413

2015-02-16 18:10:47 +00:00

..

llvm

AArch64: Safely handle the incoming sret call argument.

2015-02-16 18:10:47 +00:00

llvm-c

Fix warning: "function declaration isn’t a prototype"

2015-02-04 13:30:28 +00:00