Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/combine_ashiftrt_2.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* Target architectures where RTL has been found to produce the expected (neg:SI (ge:SI ...)) when compiling for ILP32. */ /* { dg-do compile { target aarch64*-*-* arm*-*-* i?86-*-* microblaze-*-* mips*-*-* powerpc*-*-* sparc*-*-* x86_64-*-* } } */ /* { dg-require-effective-target ilp32 } */ /* { dg-options "-O2 -fdump-rtl-combine-all" } */ typedef long int32_t; int32_t foo (int32_t a) { return (~a) >> 31; } /* The combine phase will try to combine not & ashiftrt, and combine_simplify_rtx should transform (ashiftrt (not x) 31) to (not (ashiftrt x 63)) and then to (neg (ge x 0)). We look for the *attempt* to match this RTL pattern, regardless of whether an actual insn may be found on the platform. */ /* { dg-final { scan-rtl-dump "\\(neg:SI \\(ge:SI" "combine" } } */