patch to fix PR 60650

[Ramana Radhakrishnan]

On 03/29/14 11:24, Jakub Jelinek wrote:
> On Thu, Mar 27, 2014 at 02:51:38PM -0400, Vladimir Makarov wrote:
>> 2014-03-27  Vladimir Makarov  <vmakarov@redhat.com>
>>
>>          PR rtl-optimization/60650
>>          * gcc.target/arm/pr60650.c: New.
>
> The test fails for me with:
> spawn -ignore SIGHUP /builddir/build/BUILD/gcc-4.9.0-20140328/obj-armv7hl-redhat-linux-gnueabi/gcc/xgcc -B/builddir/build/BUILD/gcc-4.9.0-20140328/obj-armv7hl-redhat-linux-gnueabi/gcc/builddir/build/BUILD/gcc-4.9.0-20140328/gcc/testsuite/gcc.target/arm/pr60650.c -fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -fno-omit-frame-pointer -mabi=apcs-gnu -march=armv7-a -S -o pr60650.s
> /builddir/build/BUILD/gcc-4.9.0-20140328/gcc/testsuite/gcc.target/arm/pr60650.c:1:0: sorry, unimplemented: -mfloat-abi=hard and VFP
> compiler exited with status 1
> Does one have to pass -mfloat-abi= option too unconditionally?
> Can somebody from the ARM/Linaro people handle this?
>


Since, this testcase came from the kernel, you could compile this soft / 
softfp to make the problem go away and that would be quite reasonable.


Attached is what I've applied to trunk after

1. testing cross arm-none-eabi with a hardfp multilib - hardfp multilib 
marks as unsupported but softfp passes.

2. testing native hardfp which is default on distros, test passes.

Given there are enough autotesters that do these 2 variations we'll 
catch failures if any with this testcase.

regards
Ramana

> Also:
>
>> --- /dev/null
>> +++ b/gcc/testsuite/gcc.target/arm/pr60650.c
> ...
>> +      asm ("1\t.long ");
>
> This asm looks quite bogus, and with
> 	asm ("");
> it ICEs the same way, can it be changed?
>
>> +      __builtin_unreachable ();
>> +    }
>> +}
>
> 	Jakub
>


-- 
Ramana Radhakrishnan
Principal Engineer
ARM Ltd.
-------------- next part --------------
diff --git a/gcc/testsuite/gcc.target/arm/pr60650.c b/gcc/testsuite/gcc.target/arm/pr60650.c
index bfa7f1e..17a5ed4 100644
--- a/gcc/testsuite/gcc.target/arm/pr60650.c
+++ b/gcc/testsuite/gcc.target/arm/pr60650.c
@@ -1,5 +1,7 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fno-omit-frame-pointer -mabi=apcs-gnu -march=armv7-a" } */
+/* { dg-skip-if "do not override -mfloat-abi" { *-*-* } { "-mfloat-abi=*" } {"-mfloat-abi=softfp" } } */
+/* { dg-options "-O2 -fno-omit-frame-pointer -mabi=apcs-gnu -mfloat-abi=softfp" } */
+
 
 struct super_block
 {