http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54139
Bug #: 54139
Summary: [4.8 regression] some ARM Thumb-2 tests appear to be
run on ARMv5TE hardware causing unhandled exceptions
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: mi...@it.uu.se
Bootstrapping gcc-4.8 on armv5tel-linux-gnueabi and running the test suite now
results in kernel messages about unhandled exceptions from (what appears to be)
Thumb-2 specific test cases:
Alignment trap: ftest-armv6t2-t (1910) PC=0x0000842e Instr=0x3304601a
Address=0x00008501 FSR 0x801
Alignment trap: not handling instruction 3304601a at [<0000842e>]
Unhandled fault: alignment exception (0x801) at 0x00008501
Alignment trap: ftest-armv7a-th (1982) PC=0x0000842e Instr=0x3304601a
Address=0x00008509 FSR 0x801
Alignment trap: not handling instruction 3304601a at [<0000842e>]
Unhandled fault: alignment exception (0x801) at 0x00008509
Alignment trap: ftest-armv7r-th (2042) PC=0x0000842e Instr=0x3304601a
Address=0x00008509 FSR 0x801
Alignment trap: not handling instruction 3304601a at [<0000842e>]
Unhandled fault: alignment exception (0x801) at 0x00008509
The program names are truncated, but clearly correspond to
ftest-armv6t2-thumb.c, ftest-armv7a-thumb.c, and ftest-armv7r-thumb.c in
gcc/testsuite/gcc.target/arm/.
This seems to have started some time between 20120624 and 20120701. The test
suite results between those two dates show:
+FAIL: gcc.target/arm/ftest-armv6t2-thumb.c execution test
+FAIL: gcc.target/arm/ftest-armv7a-thumb.c execution test
+FAIL: gcc.target/arm/ftest-armv7r-thumb.c execution test
As the same time ARM's mmx-2.c test case started failing at compile-time:
+FAIL: gcc.target/arm/mmx-2.c (test for excess errors)
and a look in the detailed log show 100+ lines of warnings and errors related
to numerous __builtin_arm_${foo} not being recognized.
