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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fdfca8ba6bc..da93f6f8867 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2018-10-24 Segher Boessenkool <segher@kernel.crashing.org> + + PR rtl-optimization/87720 + * combine.c (make_more_copies): Skip if the dest is pc_rtx. + 2018-10-24 Alexandre Oliva <aoliva@redhat.com> * gimple-ssa-isolate-paths.c diff --git a/gcc/combine.c b/gcc/combine.c index 8ec6809c05c..2b933289392 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -14958,6 +14958,8 @@ make_more_copies (void) continue; rtx src = SET_SRC (set); rtx dest = SET_DEST (set); + if (dest == pc_rtx) + continue; if (GET_CODE (src) == SUBREG) src = SUBREG_REG (src); if (!(REG_P (src) && HARD_REGISTER_P (src))) |