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| author | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2025-09-02 15:58:26 -0700 |
|---|---|---|
| committer | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2025-09-02 15:58:26 -0700 |
| commit | 071b4126c613881f4cb25b4e5c39032964827f88 (patch) | |
| tree | 7ed805786566918630d1d617b1ed8f7310f5fd8e /gcc/regrename.cc | |
| parent | 845d23f3ea08ba873197c275a8857eee7edad996 (diff) | |
| parent | caa1c2f42691d68af4d894a5c3e700ecd2dba080 (diff) | |
| download | gcc-devel/gfortran-test.zip gcc-devel/gfortran-test.tar.gz gcc-devel/gfortran-test.tar.bz2 | |
Merge branch 'master' into gfortran-testdevel/gfortran-test
Diffstat (limited to 'gcc/regrename.cc')
| -rw-r--r-- | gcc/regrename.cc | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/regrename.cc b/gcc/regrename.cc index 7de8881..cb03c1d 100644 --- a/gcc/regrename.cc +++ b/gcc/regrename.cc @@ -1117,6 +1117,12 @@ scan_rtx_reg (rtx_insn *insn, rtx *loc, enum reg_class cl, enum scan_actions act unsigned this_regno = REGNO (x); int this_nregs = REG_NREGS (x); + /* Do not process write actions for the second instruction of + a macro-fused pair of two single_sets. */ + if ((action == mark_write || action == terminate_write) + && single_output_fused_pair_p (insn)) + return; + if (action == mark_write) { if (type == OP_OUT) @@ -1153,7 +1159,9 @@ scan_rtx_reg (rtx_insn *insn, rtx *loc, enum reg_class cl, enum scan_actions act return; } - if ((type == OP_OUT) != (action == terminate_write || action == mark_access)) + if ((type == OP_OUT) != (action == terminate_write || action == mark_access) + && ! (type == OP_OUT && action == mark_read + && single_output_fused_pair_p (insn))) return; for (p = &open_chains; *p;) |