https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84711
Bug ID: 84711
Summary: AArch32 big-endian fails when taking subreg of a
vector mode to a scalar mode.
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: tnfchris at gcc dot gnu.org
Reporter: tnfchris at gcc dot gnu.org
Target Milestone: ---
Target: armeb-*-*
The following example
typedef __fp16 v4f16
__attribute__ ((vector_size (8)));
v4f16 fn1 (v4f16 p)
{
return p;
}
fails only on arm big-endian when using `-mfpu=neon -mfloat-abi=hard
-mfp16-format=ieee -mbig-endian` and results in an ICE.
This case triggers an endless recursion in the mid-end when taking the subreg
and eventually segfaults when it runs out of stack space.
