Hi Philipp: Could you add zihintpause to -march parser and guard that on the pattern and builtin like zifencei[1-2]?
And could you sent a PR to https://github.com/riscv/riscv-c-api-doc/blob/master/riscv-c-api.md to mention __builtin_riscv_pause? Thanks! [1] march parser change: https://github.com/gcc-mirror/gcc/commit/b03be74bad08c382da47e048007a78fa3fb4ef49 [2] Default version for ext.: https://github.com/gcc-mirror/gcc/commit/4b81528241ca682025d92558ff6aeec91dafdca8 > --- /dev/null > +++ b/gcc/testsuite/gcc.target/riscv/builtin_pause.c > @@ -0,0 +1,10 @@ > +/* { dg-do compile } */ > +/* { dg-options "-O2" } */ > + > +void test_pause() I would suggest you change the function name in the testcase, otherwise the scan-assembler test will always pass even if you didn't generate "pause" instruction. > +{ > + __builtin_riscv_pause (); > +} > + > +/* { dg-final { scan-assembler "pause" } } */ > + > -- > 2.18.4 >
