https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69180
Bug ID: 69180
Summary: [ARM] #pragma GCC target should not warn about
redefined macros
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: chrbr at gcc dot gnu.org
Target Milestone: ---
the line :
#pragma GCC target ("fpu=neon")
compiled with -mfloat-abi=softfp -mfpu=neon-fp-armv8
warns with
warning: "__ARM_NEON_FP" redefined
<built-in>: note: this is the location of the previous definition
breaking a few tests for compiler configured with neon-fp-armv8 as default
This warning should not be necessary as implicitly set, but should only occur
for explicit __ARM_NEON_FP user redefinition (e.g -D__ARM_NEON_FP=0)
the other macro having context sensitive values are __ARM_FP and
__ARM_FEATURE_LDREX
