nios2.opt (march, mbmx, mcdx): New options.
2015-07-14 Sandra Loosemore <sandra@codesourcery.com> Cesar Philippidis <cesar@codesourcery.com> Chung-Lin Tang <cltang@codesourcery.com> gcc/ * config/nios2/nios2.opt (march, mbmx, mcdx): New options. * config/nios2/nios2-opts.h (enum nios2_arch_type): New enum for Nios II architecture level. * config/nios2/nios2.h (TARGET_ARCH_R2): New define. (TARGET_CPU_CPP_BUILTINS): Add definition of __nios2_arch__ symbol. (OPTION_DEFAULT_SPECS): Define. (ASM_SPEC): Add -march= spec strings. * config/nios2/nios2.c (nios2_option_override): Check for conflicts involving new options. * config.gcc (nios2*-*-*): Support --with-arch=. * doc/invoke.texi (Option Summary, Nios II Options): Document -march=, -mbmx, and -mcdx. Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com> Co-Authored-By: Chung-Lin Tang <cltang@codesourcery.com> From-SVN: r225791
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Sandra Loosemore
Sandra Loosemore
parent
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77c50d73f6
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@ -1,3 +1,20 @@
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2015-07-14 Sandra Loosemore <sandra@codesourcery.com>
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Cesar Philippidis <cesar@codesourcery.com>
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Chung-Lin Tang <cltang@codesourcery.com>
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* config/nios2/nios2.opt (march, mbmx, mcdx): New options.
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* config/nios2/nios2-opts.h (enum nios2_arch_type): New enum for
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Nios II architecture level.
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* config/nios2/nios2.h (TARGET_ARCH_R2): New define.
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(TARGET_CPU_CPP_BUILTINS): Add definition of __nios2_arch__ symbol.
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(OPTION_DEFAULT_SPECS): Define.
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(ASM_SPEC): Add -march= spec strings.
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* config/nios2/nios2.c (nios2_option_override): Check for
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conflicts involving new options.
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* config.gcc (nios2*-*-*): Support --with-arch=.
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* doc/invoke.texi (Option Summary, Nios II Options): Document
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-march=, -mbmx, and -mcdx.
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2015-07-14 Vladimir Makarov <vmakarov@redhat.com>
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PR rtl-optimization/66626
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@ -4052,6 +4052,19 @@ case "${target}" in
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esac
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;;
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nios2*-*-*)
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supported_defaults="arch"
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case "$with_arch" in
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"" | r1 | r2)
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# OK
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;;
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*)
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echo "Unknown arch used in --with-arch=$with_arch" 1>&2
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exit 1
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;;
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esac
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;;
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powerpc*-*-* | rs6000-*-*)
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supported_defaults="abi cpu cpu_32 cpu_64 float tune tune_32 tune_64 advance_toolchain"
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@ -77,5 +77,12 @@ enum nios2_ccs_code
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CCS_BUILTIN_CALL
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};
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/* Supported Nios II Architectures. */
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enum nios2_arch_type
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{
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ARCH_R1=1,
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ARCH_R2
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};
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#endif
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@ -1078,6 +1078,19 @@ nios2_option_override (void)
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if (!TARGET_HAS_MUL && TARGET_HAS_MULX)
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target_flags &= ~MASK_HAS_MULX;
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/* Optional BMX and CDX instructions only make sense for R2. */
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if (!TARGET_ARCH_R2)
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{
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if (TARGET_HAS_BMX)
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error ("BMX instructions are only supported with R2 architecture");
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if (TARGET_HAS_CDX)
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error ("CDX instructions are only supported with R2 architecture");
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}
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/* R2 is little-endian only. */
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if (TARGET_ARCH_R2 && TARGET_BIG_ENDIAN)
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error ("R2 architecture is little-endian only");
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/* Initialize default FPU configurations. */
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nios2_init_fpu_configs ();
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@ -23,6 +23,9 @@
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#ifndef GCC_NIOS2_H
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#define GCC_NIOS2_H
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/* Indicate R2 ISA level support. */
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#define TARGET_ARCH_R2 (nios2_arch_option == ARCH_R2)
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/* FPU insn codes declared here. */
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#include "config/nios2/nios2-opts.h"
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@ -36,7 +39,9 @@
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builtin_define_std ("nios2_big_endian"); \
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else \
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builtin_define_std ("nios2_little_endian"); \
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} \
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builtin_define_with_int_value ( \
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"__nios2_arch__", (int) nios2_arch_option); \
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} \
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while (0)
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/* We're little endian, unless otherwise specified by defining
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@ -50,14 +55,17 @@
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# define TARGET_DEFAULT (MASK_HAS_MUL | TARGET_ENDIAN_DEFAULT)
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#endif
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#define OPTION_DEFAULT_SPECS \
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{"arch", "%{!march=*:%{!mcpu=*:-march=%(VALUE)}}" }
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#define CC1_SPEC "%{G*}"
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#if TARGET_ENDIAN_DEFAULT == 0
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# define ASM_SPEC "%{!meb:-EL} %{meb:-EB}"
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# define ASM_SPEC "%{!meb:-EL} %{meb:-EB} %{march=*:-march=%*}"
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# define LINK_SPEC_ENDIAN "%{!meb:-EL} %{meb:-EB}"
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# define MULTILIB_DEFAULTS { "EL" }
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#else
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# define ASM_SPEC "%{!mel:-EB} %{mel:-EL}"
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# define ASM_SPEC "%{!mel:-EB} %{mel:-EL} %{march=*:-march=%*}"
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# define LINK_SPEC_ENDIAN "%{!mel:-EB} %{mel:-EL}"
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# define MULTILIB_DEFAULTS { "EB" }
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#endif
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@ -565,4 +565,24 @@ mcustom-round=
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Target Report RejectNegative Joined UInteger Var(nios2_custom_round) Init(-1)
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Integer id (N) of round custom instruction
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march=
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Target RejectNegative Joined Enum(nios2_arch_type) Var(nios2_arch_option) Init(ARCH_R1)
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Specify the name of the target architecture.
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Enum
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Name(nios2_arch_type) Type(enum nios2_arch_type)
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Valid Nios II ISA levels (for -march):
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EnumValue
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Enum(nios2_arch_type) String(r1) Value(ARCH_R1)
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EnumValue
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Enum(nios2_arch_type) String(r2) Value(ARCH_R2)
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mbmx
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Target Report Mask(HAS_BMX)
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Enable generation of R2 BMX instructions
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mcdx
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Target Report Mask(HAS_CDX)
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Enable generation of R2 CDX instructions
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@ -857,7 +857,8 @@ Objective-C and Objective-C++ Dialects}.
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-mhw-mul -mno-hw-mul -mhw-mulx -mno-hw-mulx -mno-hw-div -mhw-div @gol
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-mcustom-@var{insn}=@var{N} -mno-custom-@var{insn} @gol
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-mcustom-fpu-cfg=@var{name} @gol
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-mhal -msmallc -msys-crt0=@var{name} -msys-lib=@var{name}}
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-mhal -msmallc -msys-crt0=@var{name} -msys-lib=@var{name} @gol
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-march=@var{arch} -mbmx -mno-bmx -mcdx -mno-cdx}
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@emph{Nvidia PTX Options}
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@gccoptlist{-m32 -m64 -mmainkernel}
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@ -18500,6 +18501,15 @@ small data section.
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Generate little-endian (default) or big-endian (experimental) code,
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respectively.
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@item -march=@var{arch}
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@opindex march
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This specifies the name of the target Nios II architecture. GCC uses this
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name to determine what kind of instructions it can emit when generating
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assembly code. Permissible names are: @samp{r1}, @samp{r2}.
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The preprocessor macro @code{__nios2_arch__} is available to programs,
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with value 1 or 2, indicating the targeted ISA level.
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@item -mbypass-cache
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@itemx -mno-bypass-cache
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@opindex mno-bypass-cache
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@ -18538,6 +18548,15 @@ Enable or disable emitting @code{mul}, @code{mulx} and @code{div} family of
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instructions by the compiler. The default is to emit @code{mul}
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and not emit @code{div} and @code{mulx}.
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@item -mbmx
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@itemx -mno-bmx
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@itemx -mcdx
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@itemx -mno-cdx
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Enable or disable generation of Nios II R2 BMX (bit manipulation) and
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CDX (code density) instructions. Enabling these instructions also
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requires @option{-march=r2}. Since these instructions are optional
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extensions to the R2 architecture, the default is not to emit them.
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@item -mcustom-@var{insn}=@var{N}
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@itemx -mno-custom-@var{insn}
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@opindex mcustom-@var{insn}
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