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charset=utf-8 Content-Disposition: inline Hi All, This initializes regnum to 0 for when undefined_p. 0 is the right default as it's supposed to get the lowpart when undefined. Bootstrapped Regtested on aarch64-none-linux-gnu and no issues. Ok for master? Thanks, Tamar gcc/ChangeLog: * expmed.cc (store_bit_field_1): Initialize regnum to 0. --- inline copy of patch -- diff --git a/gcc/expmed.cc b/gcc/expmed.cc index 8d7418be418406e72a895ecddf2dc7fdb950c76c..cdc0adb389202a5cab79a8d89056ddc347fb28cb 100644 --- a/gcc/expmed.cc +++ b/gcc/expmed.cc @@ -794,7 +794,7 @@ store_bit_field_1 (rtx str_rtx, poly_uint64 bitsize, poly_uint64 bitnum, words or to cope with mode punning between equal-sized modes. In the latter case, use subreg on the rhs side, not lhs. */ rtx sub; - HOST_WIDE_INT regnum; + HOST_WIDE_INT regnum = 0; poly_uint64 regsize = REGMODE_NATURAL_SIZE (GET_MODE (op0)); if (known_eq (bitnum, 0U) && known_eq (bitsize, GET_MODE_BITSIZE (GET_MODE (op0)))) -- --TeUiZkP9xOQsiglY Content-Type: text/plain; charset=utf-8 Content-Disposition: attachment; filename="rb16178.patch" diff --git a/gcc/expmed.cc b/gcc/expmed.cc index 8d7418be418406e72a895ecddf2dc7fdb950c76c..cdc0adb389202a5cab79a8d89056ddc347fb28cb 100644 --- a/gcc/expmed.cc +++ b/gcc/expmed.cc @@ -794,7 +794,7 @@ store_bit_field_1 (rtx str_rtx, poly_uint64 bitsize, poly_uint64 bitnum, words or to cope with mode punning between equal-sized modes. In the latter case, use subreg on the rhs side, not lhs. */ rtx sub; - HOST_WIDE_INT regnum; + HOST_WIDE_INT regnum = 0; poly_uint64 regsize = REGMODE_NATURAL_SIZE (GET_MODE (op0)); if (known_eq (bitnum, 0U) && known_eq (bitsize, GET_MODE_BITSIZE (GET_MODE (op0)))) --TeUiZkP9xOQsiglY--