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It makes sense to use what other targets do and run all the VAX test cases over all the usual optimization levels, so make `vax.exp' use our `gcc-dg-runtest' rather than the generic `dg-runtest' test driver. This breaks `pr56875.c' however, which is optimized away at levels above `-O0' as a result of how it has been written for calculations to make no effect: FAIL: gcc.target/vax/pr56875.c -O1 scan-assembler ashq .*,\\$0xffffffffffffffff, FAIL: gcc.target/vax/pr56875.c -O2 scan-assembler ashq .*,\\$0xffffffffffffffff, FAIL: gcc.target/vax/pr56875.c -O3 -g scan-assembler ashq .*,\\$0xffffffffffffffff, FAIL: gcc.target/vax/pr56875.c -Os scan-assembler ashq .*,\\$0xffffffffffffffff, FAIL: gcc.target/vax/pr56875.c -O2 -flto -fno-use-linker-plugin -flto-partition=none scan-assembler ashq .*,\\$0xffffffffffffffff, FAIL: gcc.target/vax/pr56875.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects scan-assembler ashq .*,\\$0xffffffffffffffff, Rather than keeping it at `-O0' update the test case for its code to do make effect while retaining its sense. Also reformat it according to our requirements. gcc/testsuite/ * gcc.target/vax/vax.exp: Use `gcc-dg-runtest' rather than `dg-runtest'. * gcc.target/vax/pr56875.c (dg-options): Make empty. (a): Rewrite for calculations to make effect. Reformat.
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