Bug 69227

Summary:	FAIL: gcc.dg/torture/builtin-integral-1.c -O1 (test for excess errors)
Product:	gcc	Reporter:	Andre Vieira <andre.simoesdiasvieira>
Component:	target	Assignee:	Not yet assigned to anyone <unassigned>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	P3
Version:	6.0
Target Milestone:	---
Host:		Target:	arm-none-eabi
Build:		Known to work:
Known to fail:		Last reconfirmed:

Description Andre Vieira 2016-01-11 13:53:26 UTC

Commit r232191 causes the following fail on arm-none-eabi target:

FAIL: gcc.dg/torture/builtin-integral-1.c -O1 (test for excess errors)

As it no longer folds away __builtin_ceill for __builtin_fabsf. This is because Gerald's patch checks for 'targetm.libc_has_function (function_c99_misc)' for a transformation used here and, for arm-none-eabi, TARGET_LIBC_HAS_FUNCTION is defined as 'no_c99_libc_has_function', which always returns false.

The question now is whether we should support function_c99_misc with 'arm-none-eabi', which comes with newlib. I believe newlib does not claim to fully support C99.

Comment 1 ktkachov 2016-01-11 13:57:09 UTC

Relevant thread on gcc-patches:
https://gcc.gnu.org/ml/gcc-patches/2016-01/msg00586.html

Comment 2 Andre Vieira 2016-01-11 14:31:53 UTC

I have decided to email the newlib mailinglist to figure out which function classes we should and should not support for 'arm-none-eabi'.

See https://sourceware.org/ml/newlib/2016/msg00009.html

Comment 3 Andre Vieira 2016-01-28 13:50:44 UTC

Test was changed to require C99 runtime in r232487.