Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/combine_ashiftrt_1.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 which have been found to produce the expected RTL (neg:DI (ge:DI ...)) when compiling for LP64. */ /* { dg-do compile { target aarch64*-*-* arm*-*-* i?86-*-* ia64-*-* powerpc*-*-* sparc*-*-* x86_64-*-* } } */ /* { dg-require-effective-target lp64 } */ /* { dg-options "-O2 -fdump-rtl-combine-all" } */ typedef long long int int64_t; int64_t foo (int64_t a) { return (~a) >> 63; } /* The combine phase will try to combine not & ashiftrt, and combine_simplify_rtx should transform (ashiftrt (not x) 63) 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:DI \\(ge:DI" "combine" } } */