util/crossgcc/patches/gcc-14.2.0_rv32iafc.patch

   1 From 88bc675eab98cea388daf40396686178ca5fcdb3 Mon Sep 17 00:00:00 2001
   2 From: Peter Marheine <pmarheine@chromium.org>
   3 Date: Mon, 15 Aug 2022 11:01:50 +1000
   4 Subject: [PATCH] riscv: elf-multilib: add rv32iafc to defaults
   5
   6 rv32iafc-ilp32 is compatible with rv32iac-ilp32 for library
   7 implementation, so add a reuse rule allowing the default configuration
   8 to support rv32iafc.
   9
  10 -IAFC is an unusual configuration (much less common than -IMAFC), but
  11 multilib reuse has essentially no cost: this change is useful to users
  12 of platforms that support hardware floating-point but cannot use
  13 hardware multiply/divide for any reason. To avoid generating a new set
  14 of libraries this is limited to the soft-float ABI.
  15
  16 Tested by verifying that `gcc -march=rv32iafc -mabi=ilp32
  17 --print-search-dirs` refers to the rv32iac/ilp32 library directory as
  18 expected, rather than just the root library directory as occurs when an
  19 unsupported target is selected (for instance, rv32id).
  20
  21 Signed-off-by: Peter Marheine <pmarheine@chromium.org>
  22 ---
  23  gcc/config/riscv/t-elf-multilib | 6 ++++--
  24  1 file changed, 4 insertions(+), 2 deletions(-)
  25
  26 diff --git a/gcc/config/riscv/t-elf-multilib b/gcc/config/riscv/t-elf-multilib
  27 index 19f9434616c..6e74b1811be 100644
  28 --- a/gcc/config/riscv/t-elf-multilib
  29 +++ b/gcc/config/riscv/t-elf-multilib
  30 @@ -1,11 +1,12 @@
  31  # This file was generated by multilib-generator with the command:
  32 -#  ./multilib-generator rv32i-ilp32--c rv32im-ilp32--c rv32iac-ilp32-- rv32imac-ilp32-- rv32imafc-ilp32f-rv32imafdc- rv64imac-lp64-- rv64imafdc-lp64d--
  33 -MULTILIB_OPTIONS = march=rv32i/march=rv32ic/march=rv32im/march=rv32imc/march=rv32iac/march=rv32imac/march=rv32imafc/march=rv32imafdc/march=rv32gc/march=rv64imac/march=rv64imafdc/march=rv64gc mabi=ilp32/mabi=ilp32f/mabi=lp64/mabi=lp64d
  34 +#  ./multilib-generator rv32i-ilp32--c rv32im-ilp32--c rv32iac-ilp32--f rv32imac-ilp32-- rv32imafc-ilp32f-rv32imafdc- rv64imac-lp64-- rv64imafdc-lp64d--
  35 +MULTILIB_OPTIONS = march=rv32i/march=rv32ic/march=rv32im/march=rv32imc/march=rv32iac/march=rv32iafc/march=rv32imac/march=rv32imafc/march=rv32imafdc/march=rv32gc/march=rv64imac/march=rv64imafdc/march=rv64gc mabi=ilp32/mabi=ilp32f/mabi=lp64/mabi=lp64d
  36  MULTILIB_DIRNAMES = rv32i \
  37  rv32ic \
  38  rv32im \
  39  rv32imc \
  40  rv32iac \
  41 +rv32iafc \
  42  rv32imac \
  43  rv32imafc \
  44  rv32imafdc \
  45 @@ -25,6 +26,7 @@ march=rv64imac/mabi=lp64 \
  46  march=rv64imafdc/mabi=lp64d
  47  MULTILIB_REUSE = march.rv32i/mabi.ilp32=march.rv32ic/mabi.ilp32 \
  48  march.rv32im/mabi.ilp32=march.rv32imc/mabi.ilp32 \
  49 +march.rv32iac/mabi.ilp32=march.rv32iafc/mabi.ilp32 \
  50  march.rv32imafc/mabi.ilp32f=march.rv32imafdc/mabi.ilp32f \
  51  march.rv32imafc/mabi.ilp32f=march.rv32gc/mabi.ilp32f \
  52  march.rv64imafdc/mabi.lp64d=march.rv64gc/mabi.lp64d
  53 --
  54 2.37.1.595.g718a3a8f04-goog
  55