This is a follow-up to https://gcc.gnu.org/pipermail/gcc-patches/2024-September/662725.html
I basically added only some documentation to the first patch. If you think that gcc/doc/extend.texi isn't the right place (especially the discussion part which will be dropped/rephrased in the end anyway), then just let me know. Stefan Schulze Frielinghaus (4): Hard register constraints Error handling for hard register constraints genoutput: Verify hard register constraints Rewrite register asm into hard register constraints gcc/cfgexpand.cc | 42 --- gcc/common.opt | 4 + gcc/doc/extend.texi | 189 ++++++++++++ gcc/doc/md.texi | 6 + gcc/function.cc | 116 ++++++++ gcc/genoutput.cc | 60 ++++ gcc/genpreds.cc | 4 +- gcc/gimplify.cc | 151 +++++++++- gcc/gimplify_reg_info.h | 130 +++++++++ gcc/ira.cc | 79 +++++- gcc/lra-constraints.cc | 13 + gcc/output.h | 2 + gcc/recog.cc | 11 +- gcc/stmt.cc | 268 +++++++++++++++++- gcc/stmt.h | 9 +- gcc/testsuite/gcc.dg/asm-hard-reg-1.c | 85 ++++++ gcc/testsuite/gcc.dg/asm-hard-reg-2.c | 33 +++ gcc/testsuite/gcc.dg/asm-hard-reg-3.c | 25 ++ gcc/testsuite/gcc.dg/asm-hard-reg-4.c | 50 ++++ gcc/testsuite/gcc.dg/asm-hard-reg-5.c | 36 +++ gcc/testsuite/gcc.dg/asm-hard-reg-6.c | 60 ++++ gcc/testsuite/gcc.dg/asm-hard-reg-7.c | 41 +++ gcc/testsuite/gcc.dg/asm-hard-reg-8.c | 49 ++++ .../gcc.dg/asm-hard-reg-demotion-1.c | 19 ++ .../gcc.dg/asm-hard-reg-demotion-2.c | 19 ++ gcc/testsuite/gcc.dg/asm-hard-reg-demotion.h | 52 ++++ gcc/testsuite/gcc.dg/asm-hard-reg-error-1.c | 83 ++++++ gcc/testsuite/gcc.dg/asm-hard-reg-error-2.c | 20 ++ gcc/testsuite/gcc.dg/asm-hard-reg-error-3.c | 21 ++ gcc/testsuite/gcc.dg/pr87600-2.c | 30 +- gcc/testsuite/gcc.dg/pr87600-3.c | 35 +++ gcc/testsuite/gcc.dg/pr87600-3.s | 0 .../gcc.target/s390/asm-hard-reg-1.c | 103 +++++++ .../gcc.target/s390/asm-hard-reg-2.c | 43 +++ .../gcc.target/s390/asm-hard-reg-3.c | 42 +++ gcc/testsuite/lib/scanasm.exp | 4 + gcc/toplev.cc | 4 + 37 files changed, 1851 insertions(+), 87 deletions(-) create mode 100644 gcc/gimplify_reg_info.h create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-1.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-2.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-3.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-4.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-5.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-6.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-7.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-8.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-demotion-1.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-demotion-2.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-demotion.h create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-error-1.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-error-2.c create mode 100644 gcc/testsuite/gcc.dg/asm-hard-reg-error-3.c create mode 100644 gcc/testsuite/gcc.dg/pr87600-3.c create mode 100644 gcc/testsuite/gcc.dg/pr87600-3.s create mode 100644 gcc/testsuite/gcc.target/s390/asm-hard-reg-1.c create mode 100644 gcc/testsuite/gcc.target/s390/asm-hard-reg-2.c create mode 100644 gcc/testsuite/gcc.target/s390/asm-hard-reg-3.c -- 2.45.2
