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testsuite: remove -fwrapv from signbit-5.c

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The meaning of the testcase was changed by passing it -fwrapv.  The reason for
the test failures on some platform was because the test was testing some
implementation defined behavior wrt INT_MIN in generic code.

Instead of using -fwrapv this just removes the border case from the test so
all the values now have a defined semantic.  It still relies on the handling of
shifting a negative value right, but that wasn't changed with -fwrapv anyway.

The -fwrapv case is being handled already by other testcases.

gcc/testsuite/ChangeLog:

	* gcc.dg/signbit-5.c: Remove -fwrapv and change INT_MIN to INT_MIN+1.
This commit is contained in:
Tamar Christina 2024-09-05 10:36:02 +01:00
parent 240be78237
commit 67eaf67360
1 changed files with 3 additions and 3 deletions
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6
gcc/testsuite/gcc.dg/signbit-5.c
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@ -1,5 +1,5 @@
/* { dg-do run } */
/* { dg-options "-O3 -fwrapv" } */
/* { dg-options "-O3" } */
/* This test does not work when the truth type does not match vector type. */
/* { dg-additional-options "-march=armv8-a" { target aarch64_sve } } */
@ -42,8 +42,8 @@ int main ()
TYPE a[N];
TYPE b[N];
a[0] = INT_MIN;
b[0] = INT_MIN;
a[0] = INT_MIN+1;
b[0] = INT_MIN+1;
for (int i = 1; i < N; ++i)
{