gcc/ChangeLog
* config.gcc (riscv): Accept rv64e and lp64e.
* config/riscv/arch-canonicalize: Likewise.
* config/riscv/riscv-c.cc (riscv_cpu_cpp_builtins): Likewise.
* config/riscv/riscv-opts.h (riscv_abi_type): Likewise.
* config/riscv/riscv.cc (riscv_option_override): Likewise
* config/riscv/riscv.h (UNITS_PER_FP_ARG): Likewise.
(STACK_BOUNDARY): Likewise.
(ABI_STACK_BOUNDARY): Likewise.
(MAX_ARGS_IN_REGISTERS): Likewise.
(ABI_SPEC): Likewise.
* config/riscv/riscv.opt (abi_type): Likewise.
* doc/invoke.texi (RISC-V) <-mabi>: Likewise.
---
This is all still in flight, but evidently RV64E exists. I haven't
tested this at all, but given that we don't even have the ABI docs lined
up yet it's likely a bit away from being mergable.
---
gcc/config.gcc | 8 +++++---
gcc/config/riscv/arch-canonicalize | 2 +-
gcc/config/riscv/riscv-c.cc | 1 +
gcc/config/riscv/riscv-opts.h | 1 +
gcc/config/riscv/riscv.cc | 6 ++++--
gcc/config/riscv/riscv.h | 11 +++++++----
gcc/config/riscv/riscv.opt | 3 +++
gcc/doc/invoke.texi | 5 +++--
8 files changed, 25 insertions(+), 12 deletions(-)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 4e3b15bb5e9..4617ecb8d9b 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -4637,7 +4637,7 @@ case "${target}" in
# Infer arch from --with-arch, --target, and --with-abi.
case "${with_arch}" in
- rv32e* | rv32i* | rv32g* | rv64i* | rv64g*)
+ rv32e* | rv32i* | rv32g* | rv64e* | rv64i* | rv64g*)
# OK.
;;
"")
@@ -4645,12 +4645,13 @@ case "${target}" in
case "${with_abi}" in
ilp32e) with_arch="rv32e" ;;
ilp32 | ilp32f | ilp32d) with_arch="rv32gc" ;;
+ lp64e) with_arch="rv64e" ;;
lp64 | lp64f | lp64d) with_arch="rv64gc" ;;
*) with_arch="rv${xlen}gc" ;;
esac
;;
*)
- echo "--with-arch=${with_arch} is not supported. The
argument must begin with rv32e, rv32i, rv32g, rv64i, or rv64g." 1>&2
+ echo "--with-arch=${with_arch} is not supported. The
argument must begin with rv32e, rv32i, rv32g, rv64e, rv64i, or rv64g." 1>&2
exit 1
;;
esac
@@ -4672,6 +4673,7 @@ case "${target}" in
rv32e*) with_abi=ilp32e ;;
rv32*) with_abi=ilp32 ;;
rv64*d* | rv64g*) with_abi=lp64d ;;
+ rv64e*) with_abi=lp64e ;;
rv64*) with_abi=lp64 ;;
esac
;;
@@ -4687,7 +4689,7 @@ case "${target}" in
ilp32,rv32* | ilp32e,rv32e* \
| ilp32f,rv32*f* | ilp32f,rv32g* \
| ilp32d,rv32*d* | ilp32d,rv32g* \
- | lp64,rv64* \
+ | lp64,rv64* | lp64e,rv64e* \
| lp64f,rv64*f* | lp64f,rv64g* \
| lp64d,rv64*d* | lp64d,rv64g*)
;;
diff --git a/gcc/config/riscv/arch-canonicalize
b/gcc/config/riscv/arch-canonicalize
index fd7651ac491..8db3e88ddd7 100755
--- a/gcc/config/riscv/arch-canonicalize
+++ b/gcc/config/riscv/arch-canonicalize
@@ -71,7 +71,7 @@ def arch_canonicalize(arch, isa_spec):
new_arch = ""
extra_long_ext = []
std_exts = []
- if arch[:5] in ['rv32e', 'rv32i', 'rv32g', 'rv64i', 'rv64g']:
+ if arch[:5] in ['rv32e', 'rv32i', 'rv32g', 'rv64e', 'rv64i', 'rv64g']:
new_arch = arch[:5].replace("g", "i")
if arch[:5] in ['rv32g', 'rv64g']:
std_exts = ['m', 'a', 'f', 'd']
diff --git a/gcc/config/riscv/riscv-c.cc b/gcc/config/riscv/riscv-c.cc
index eb7ef09297e..4614dc6b6d9 100644
--- a/gcc/config/riscv/riscv-c.cc
+++ b/gcc/config/riscv/riscv-c.cc
@@ -67,6 +67,7 @@ riscv_cpu_cpp_builtins (cpp_reader *pfile)
switch (riscv_abi)
{
case ABI_ILP32E:
+ case ABI_LP64E:
builtin_define ("__riscv_abi_rve");
gcc_fallthrough ();
diff --git a/gcc/config/riscv/riscv-opts.h b/gcc/config/riscv/riscv-opts.h
index 1e153b3a6e7..70fe708cbae 100644
--- a/gcc/config/riscv/riscv-opts.h
+++ b/gcc/config/riscv/riscv-opts.h
@@ -27,6 +27,7 @@ enum riscv_abi_type {
ABI_ILP32F,
ABI_ILP32D,
ABI_LP64,
+ ABI_LP64E,
ABI_LP64F,
ABI_LP64D
};
diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index 2e83ca07394..51b7195c17b 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -5047,8 +5047,10 @@ riscv_option_override (void)
error ("requested ABI requires %<-march%> to subsume the %qc extension",
UNITS_PER_FP_ARG > 8 ? 'Q' : (UNITS_PER_FP_ARG > 4 ? 'D' : 'F'));
- if (TARGET_RVE && riscv_abi != ABI_ILP32E)
+ if (riscv_xlen == 32 && TARGET_RVE && riscv_abi != ABI_ILP32E)
error ("rv32e requires ilp32e ABI");
+ if (riscv_xlen == 64 && TARGET_RVE && riscv_abi != ABI_LP64E)
+ error ("rv64e requires lp64e ABI");
/* We do not yet support ILP32 on RV64. */
if (BITS_PER_WORD != POINTER_SIZE)
@@ -5140,7 +5142,7 @@ riscv_conditional_register_usage (void)
fixed_regs[r] = 1;
}
- if (riscv_abi == ABI_ILP32E)
+ if (riscv_abi == ABI_ILP32E || riscv_abi == ABI_LP64E)
{
for (int r = 16; r <= 31; r++)
call_used_regs[r] = 1;
diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
index 6f7f4d3fbdc..40d23208975 100644
--- a/gcc/config/riscv/riscv.h
+++ b/gcc/config/riscv/riscv.h
@@ -159,7 +159,7 @@ ASM_MISA_SPEC
/* The largest type that can be passed in floating-point registers. */
#define UNITS_PER_FP_ARG \
((riscv_abi == ABI_ILP32 || riscv_abi == ABI_ILP32E \
- || riscv_abi == ABI_LP64) \
+ || riscv_abi == ABI_LP64 || riscv_abi == ABI_LP64E)
\
? 0
\
: ((riscv_abi == ABI_ILP32F || riscv_abi == ABI_LP64F) ? 4 : 8))
@@ -182,10 +182,11 @@ ASM_MISA_SPEC
/* The smallest supported stack boundary the calling convention supports. */
#define STACK_BOUNDARY \
- (riscv_abi == ABI_ILP32E ? BITS_PER_WORD : 2 * BITS_PER_WORD)
+ ((riscv_abi == ABI_ILP32E || riscv_abi == ABI_LP64E ? 1 : 2) * BITS_PER_WORD)
/* The ABI stack alignment. */
-#define ABI_STACK_BOUNDARY (riscv_abi == ABI_ILP32E ? BITS_PER_WORD : 128)
+#define ABI_STACK_BOUNDARY \
+ (riscv_abi == ABI_ILP32E || riscv_abi == ABI_LP64E ? BITS_PER_WORD : 128)
/* There is no point aligning anything to a rounder boundary than this. */
#define BIGGEST_ALIGNMENT 128
@@ -573,7 +574,8 @@ enum reg_class
#define GP_RETURN GP_ARG_FIRST
#define FP_RETURN (UNITS_PER_FP_ARG == 0 ? GP_RETURN : FP_ARG_FIRST)
-#define MAX_ARGS_IN_REGISTERS (riscv_abi == ABI_ILP32E ? 6 : 8)
+#define MAX_ARGS_IN_REGISTERS \
+ (riscv_abi == ABI_ILP32E || riscv_abi == ABI_LP64E ? 6 : 8)
/* Symbolic macros for the first/last argument registers. */
@@ -966,6 +968,7 @@ extern unsigned riscv_stack_boundary;
"%{mabi=ilp32e:ilp32e}" \
"%{mabi=ilp32f:ilp32f}" \
"%{mabi=ilp32d:ilp32d}" \
+ "%{mabi=lp64e:lp64e}" \
"%{mabi=lp64:lp64}" \
"%{mabi=lp64f:lp64f}" \
"%{mabi=lp64d:lp64d}" \
diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index 9e9fe6d8ccd..94061ec9664 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -64,6 +64,9 @@ Enum(abi_type) String(ilp32d) Value(ABI_ILP32D)
EnumValue
Enum(abi_type) String(lp64) Value(ABI_LP64)
+EnumValue
+Enum(abi_type) String(lp64e) Value(ABI_LP64E)
+
EnumValue
Enum(abi_type) String(lp64f) Value(ABI_LP64F)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index d5ff1018372..a43e3ec50de 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -28215,8 +28215,9 @@ conventions are: @samp{ilp32}, @samp{ilp32f},
@samp{ilp32d}, @samp{lp64},
implement on some ISAs: for example, @samp{-march=rv32if -mabi=ilp32d} is
invalid because the ABI requires 64-bit values be passed in F registers, but F
registers are only 32 bits wide. There is also the @samp{ilp32e} ABI that can
-only be used with the @samp{rv32e} architecture. This ABI is not well
-specified at present, and is subject to change.
+only be used with the @samp{rv32e} architecture and the @samp{lp64e} ABI that
+can only be used with the @samp{rv64e} architecture. These two ABIs are not
+well specified at present, and are subject to change.
@item -mfdiv
@itemx -mno-fdiv
--
2.34.1
