Re: [PATCH 2/2] xtensa: Implement new target hook: TARGET_CONSTANT_OK_FOR_CPROP_P
On Mon, Sep 12, 2022 at 8:00 PM Takayuki 'January June' Suwa wrote: > On 2022/09/13 4:34, Max Filippov wrote: > > On Sun, Sep 11, 2022 at 1:50 PM Takayuki 'January June' Suwa > > wrote: > >> > >> This patch implements new target hook TARGET_CONSTANT_OK_FOR_CPROP_P in > >> order to exclude CONST_INTs that cannot fit into a MOVI machine instruction > >> from cprop. > >> > >> gcc/ChangeLog: > >> > >> * config/xtensa/xtensa.c (TARGET_CONSTANT_OK_FOR_CPROP_P): > >> New macro definition. > >> (xtensa_constant_ok_for_cprop_p): > >> Implement the hook as mentioned above. > >> --- > >> gcc/config/xtensa/xtensa.cc | 20 +--- > >> 1 file changed, 17 insertions(+), 3 deletions(-) > > > > Regtested for target=xtensa-linux-uclibc, no new regressions. > > Committed to master. > > > > Oops, sorry, this patch doesn't have the prerequisite patch merged in, so > please revert (that target hook isn't working yet). OK, reverted. -- Thanks. -- Max
Re: [PATCH 2/2] xtensa: Implement new target hook: TARGET_CONSTANT_OK_FOR_CPROP_P
On 2022/09/13 4:34, Max Filippov wrote: Hi! > On Sun, Sep 11, 2022 at 1:50 PM Takayuki 'January June' Suwa > wrote: >> >> This patch implements new target hook TARGET_CONSTANT_OK_FOR_CPROP_P in >> order to exclude CONST_INTs that cannot fit into a MOVI machine instruction >> from cprop. >> >> gcc/ChangeLog: >> >> * config/xtensa/xtensa.c (TARGET_CONSTANT_OK_FOR_CPROP_P): >> New macro definition. >> (xtensa_constant_ok_for_cprop_p): >> Implement the hook as mentioned above. >> --- >> gcc/config/xtensa/xtensa.cc | 20 +--- >> 1 file changed, 17 insertions(+), 3 deletions(-) > > Regtested for target=xtensa-linux-uclibc, no new regressions. > Committed to master. > Oops, sorry, this patch doesn't have the prerequisite patch merged in, so please revert (that target hook isn't working yet).
Re: [PATCH 2/2] xtensa: Implement new target hook: TARGET_CONSTANT_OK_FOR_CPROP_P
On Sun, Sep 11, 2022 at 1:50 PM Takayuki 'January June' Suwa wrote: > > This patch implements new target hook TARGET_CONSTANT_OK_FOR_CPROP_P in > order to exclude CONST_INTs that cannot fit into a MOVI machine instruction > from cprop. > > gcc/ChangeLog: > > * config/xtensa/xtensa.c (TARGET_CONSTANT_OK_FOR_CPROP_P): > New macro definition. > (xtensa_constant_ok_for_cprop_p): > Implement the hook as mentioned above. > --- > gcc/config/xtensa/xtensa.cc | 20 +--- > 1 file changed, 17 insertions(+), 3 deletions(-) Regtested for target=xtensa-linux-uclibc, no new regressions. Committed to master. -- Thanks. -- Max
[PATCH 2/2] xtensa: Implement new target hook: TARGET_CONSTANT_OK_FOR_CPROP_P
This patch implements new target hook TARGET_CONSTANT_OK_FOR_CPROP_P in order to exclude CONST_INTs that cannot fit into a MOVI machine instruction from cprop. gcc/ChangeLog: * config/xtensa/xtensa.c (TARGET_CONSTANT_OK_FOR_CPROP_P): New macro definition. (xtensa_constant_ok_for_cprop_p): Implement the hook as mentioned above. --- gcc/config/xtensa/xtensa.cc | 20 +--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/gcc/config/xtensa/xtensa.cc b/gcc/config/xtensa/xtensa.cc index ac52c015a94..5c432cc65aa 100644 --- a/gcc/config/xtensa/xtensa.cc +++ b/gcc/config/xtensa/xtensa.cc @@ -191,6 +191,7 @@ static bool xtensa_can_eliminate (const int from ATTRIBUTE_UNUSED, static HOST_WIDE_INT xtensa_starting_frame_offset (void); static unsigned HOST_WIDE_INT xtensa_asan_shadow_offset (void); static bool xtensa_function_ok_for_sibcall (tree, tree); +static bool xtensa_constant_ok_for_cprop_p (const_rtx); static rtx xtensa_delegitimize_address (rtx); @@ -345,12 +346,15 @@ static rtx xtensa_delegitimize_address (rtx); #undef TARGET_HAVE_SPECULATION_SAFE_VALUE #define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed -#undef TARGET_DELEGITIMIZE_ADDRESS -#define TARGET_DELEGITIMIZE_ADDRESS xtensa_delegitimize_address - #undef TARGET_FUNCTION_OK_FOR_SIBCALL #define TARGET_FUNCTION_OK_FOR_SIBCALL xtensa_function_ok_for_sibcall +#undef TARGET_CONSTANT_OK_FOR_CPROP_P +#define TARGET_CONSTANT_OK_FOR_CPROP_P xtensa_constant_ok_for_cprop_p + +#undef TARGET_DELEGITIMIZE_ADDRESS +#define TARGET_DELEGITIMIZE_ADDRESS xtensa_delegitimize_address + struct gcc_target targetm = TARGET_INITIALIZER; @@ -4983,6 +4987,16 @@ xtensa_function_ok_for_sibcall (tree decl ATTRIBUTE_UNUSED, tree exp ATTRIBUTE_U return true; } +/* Implement TARGET_CONSTANT_OK_FOR_CPROP_P. */ +static bool +xtensa_constant_ok_for_cprop_p (const_rtx x) +{ + if (CONST_INT_P (x) && ! xtensa_simm12b (INTVAL (x))) +return false; + + return true; +} + static rtx xtensa_delegitimize_address (rtx op) { -- 2.20.1