re PR target/56529 ([SH] Calls to __sdivsi3_i4i and __udivsi3_i4i are generated on SH2)
PR target/56529 * config/sh/sh.c (sh_option_override): Check for TARGET_DYNSHIFT instead of TARGET_SH2 for call-table case. Do not set sh_div_strategy to SH_DIV_CALL_TABLE for TARGET_SH2. * config.gcc (sh_multilibs): Add m2 and m2a to sh*-*-linux* multilib list. * doc/invoke.texi (SH options): Document mdiv= call-div1, call-fp, call-table options. PR target/56529 * config/sh/lib1funcs.S (udivsi3_i4i, sdivsi3_i4i): Add __SH2A__ to inclusion list. From-SVN: r196484
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Oleg Endo
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018fa87af9
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@ -1,3 +1,14 @@
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2013-03-06 Oleg Endo <olegendo@gcc.gnu.org>
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PR target/56529
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* config/sh/sh.c (sh_option_override): Check for TARGET_DYNSHIFT
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instead of TARGET_SH2 for call-table case. Do not set sh_div_strategy
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to SH_DIV_CALL_TABLE for TARGET_SH2.
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* config.gcc (sh_multilibs): Add m2 and m2a to sh*-*-linux* multilib
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list.
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* doc/invoke.texi (SH options): Document mdiv= call-div1, call-fp,
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call-table options.
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2013-03-05 Sterling Augustine <saugustine@google.com>
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Cary Coutant <ccoutant@google.com>
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@ -2371,7 +2371,7 @@ sh-*-elf* | sh[12346l]*-*-elf* | \
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sh[1234]*) sh_multilibs=${sh_cpu_target} ;;
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sh64* | sh5*) sh_multilibs=m5-32media,m5-32media-nofpu,m5-compact,m5-compact-nofpu,m5-64media,m5-64media-nofpu ;;
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sh-superh-*) sh_multilibs=m4,m4-single,m4-single-only,m4-nofpu ;;
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sh*-*-linux*) sh_multilibs=m1,m3e,m4 ;;
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sh*-*-linux*) sh_multilibs=m1,m2,m2a,m3e,m4 ;;
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sh*-*-netbsd*) sh_multilibs=m3,m3e,m4 ;;
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*) sh_multilibs=m1,m2,m2e,m4,m4-single,m4-single-only,m2a,m2a-single ;;
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esac
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@ -820,7 +820,7 @@ sh_option_override (void)
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|| (TARGET_HARD_SH4 && TARGET_SH2E)
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|| (TARGET_SHCOMPACT && TARGET_FPU_ANY)))
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sh_div_strategy = SH_DIV_CALL_FP;
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else if (! strcmp (sh_div_str, "call-table") && TARGET_SH2)
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else if (! strcmp (sh_div_str, "call-table") && TARGET_DYNSHIFT)
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sh_div_strategy = SH_DIV_CALL_TABLE;
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else
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/* Pick one that makes most sense for the target in general.
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@ -840,8 +840,6 @@ sh_option_override (void)
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sh_div_strategy = SH_DIV_CALL_FP;
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/* SH1 .. SH3 cores often go into small-footprint systems, so
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default to the smallest implementation available. */
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else if (TARGET_SH2) /* ??? EXPERIMENTAL */
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sh_div_strategy = SH_DIV_CALL_TABLE;
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else
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sh_div_strategy = SH_DIV_CALL_DIV1;
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}
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@ -18749,8 +18749,8 @@ Set the cost to assume for a multiply insn.
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@item -mdiv=@var{strategy}
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@opindex mdiv=@var{strategy}
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Set the division strategy to use for SHmedia code. @var{strategy} must be
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one of:
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Set the division strategy to be used for integer division operations.
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For SHmedia @var{strategy} can be one of:
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@table @samp
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@ -18808,6 +18808,36 @@ a small dividend to be unlikely, and @samp{inv20l} assumes it to be likely.
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@end table
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For targets other than SHmedia @var{strategy} can be one of:
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@table @samp
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@item call-div1
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Calls a library function that uses the single-step division instruction
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@code{div1} to perform the operation. Division by zero calculates an
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unspecified result and does not trap. This is the default except for SH4,
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SH2A and SHcompact.
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@item call-fp
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Calls a library function that performs the operation in double precision
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floating point. Division by zero causes a floating-point exception. This is
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the default for SHcompact with FPU. Specifying this for targets that do not
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have a double precision FPU will default to @code{call-div1}.
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@item call-table
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Calls a library function that uses a lookup table for small divisors and
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the @code{div1} instruction with case distinction for larger divisors. Division
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by zero calculates an unspecified result and does not trap. This is the default
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for SH4. Specifying this for targets that do not have dynamic shift
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instructions will default to @code{call-div1}.
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@end table
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When a division strategy has not been specified the default strategy will be
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selected based on the current target. For SH2A the default strategy is to
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use the @code{divs} and @code{divu} instructions instead of library function
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calls.
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@item -maccumulate-outgoing-args
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@opindex maccumulate-outgoing-args
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Reserve space once for outgoing arguments in the function prologue rather
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@ -1,3 +1,9 @@
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2013-03-06 Oleg Endo <olegendo@gcc.gnu.org>
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PR target/56529
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* config/sh/lib1funcs.S (udivsi3_i4i, sdivsi3_i4i): Add __SH2A__ to
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inclusion list.
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2013-03-04 Edgar E. Iglesias <edgar.iglesias@gmail.com>
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* config/microblaze/crti.S: Setup stack protection at entry
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@ -3288,8 +3288,8 @@ GLOBAL(div_table):
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.word 17136
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.word 16639
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#elif defined (__SH3__) || defined (__SH3E__) || defined (__SH4__) || defined (__SH4_SINGLE__) || defined (__SH4_SINGLE_ONLY__) || defined (__SH4_NOFPU__)
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/* This code used shld, thus is not suitable for SH1 / SH2. */
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#elif defined (__SH2A__) || defined (__SH3__) || defined (__SH3E__) || defined (__SH4__) || defined (__SH4_SINGLE__) || defined (__SH4_SINGLE_ONLY__) || defined (__SH4_NOFPU__)
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/* This code uses shld, thus is not suitable for SH1 / SH2. */
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/* Signed / unsigned division without use of FPU, optimized for SH4.
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Uses a lookup table for divisors in the range -128 .. +128, and
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