diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 6476812..cb5fa40 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -90,6 +90,7 @@ along with GCC; see the file COPYING3. If not see #include "rtl-iter.h" #include "print-rtl.h" #include "function-abi.h" +#include "rtlanal.h" /* Number of attempts to combine instructions in this function. */ @@ -6276,6 +6277,19 @@ combine_simplify_rtx (rtx x, machine_mode op0_mode, int in_dest, - 1, 0)); break; + case VEC_SELECT: + { + rtx trueop0 = XEXP (x, 0); + mode = GET_MODE (trueop0); + rtx trueop1 = XEXP (x, 1); + /* If we select a low-part subreg, return that. */ + if (vec_series_lowpart_p (GET_MODE (x), mode, trueop1)) + { + rtx new_rtx = lowpart_subreg (GET_MODE (x), trueop0, mode); + if (new_rtx != NULL_RTX) + return new_rtx; + } + } default: break; |