[Committed][Arm][testsuite] Fix failure for arm-fp16-ops-*.C

[Sudakshina Das]

Hi

Since r275022 which deprecates some uses of volatile, we have seen the 
following failures on arm-none-eabi and arm-none-linux-gnueabihf
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-1.C  -std=gnu++2a (test for 
excess errors)
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-2.C  -std=gnu++2a (test for 
excess errors)
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-3.C  -std=gnu++2a (test for 
excess errors)
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-4.C  -std=gnu++2a (test for 
excess errors)
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-5.C  -std=gnu++2a (test for 
excess errors)
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-6.C  -std=gnu++2a (test for 
excess errors)
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-7.C  -std=gnu++2a (test for 
excess errors)
FAIL: g++.dg/ext/arm-fp16/arm-fp16-ops-8.C  -std=gnu++2a (test for 
excess errors)
Which catches the deprecated uses of volatile variables declared in 
arm-fp16-ops.h.

This patch removes the volatile declarations from the header. Since none 
of the tests are run with any high optimization levels, this should 
change should not prevent the real function of the tests.

Tests with RUNTESTFLAGS="dg.exp=arm-fp16-ops-*.C" now pass with the 
patch on arm-none-eabi.
Committed as obvious r278905

gcc/testsuite/ChangeLog:

2019-xx-xx  Sudakshina Das  <sudi....@arm.com>

        * g++.dg/ext/arm-fp16/arm-fp16-ops.h: Remove volatile keyword.

Thanks
Sudi

diff --git a/gcc/testsuite/g++.dg/ext/arm-fp16/arm-fp16-ops.h b/gcc/testsuite/g++.dg/ext/arm-fp16/arm-fp16-ops.h
index 320494e..a92e081 100644
--- a/gcc/testsuite/g++.dg/ext/arm-fp16/arm-fp16-ops.h
+++ b/gcc/testsuite/g++.dg/ext/arm-fp16/arm-fp16-ops.h
@@ -7,16 +7,16 @@
 #define TEST(e) assert (e)
 #define TESTNOT(e) assert (!(e))
 
-volatile __fp16 h0 = 0.0;
-volatile __fp16 h1 = 1.0;
-volatile __fp16 h42 = 42.0;
-volatile __fp16 hm2 = -2.0;
-volatile __fp16 temp;
-
-volatile float f0 = 0.0;
-volatile float f1 = 1.0;
-volatile float f42 = 42.0;
-volatile float fm2 = -2.0;
+__fp16 h0 = 0.0;
+__fp16 h1 = 1.0;
+__fp16 h42 = 42.0;
+__fp16 hm2 = -2.0;
+__fp16 temp;
+
+float f0 = 0.0;
+float f1 = 1.0;
+float f42 = 42.0;
+float fm2 = -2.0;
 
 int main (void)
 {