https://gcc.gnu.org/g:92f58fa12d9a7df32899ed057ffed50650967276
commit r16-9149-g92f58fa12d9a7df32899ed057ffed50650967276 Author: Jeevitha <[email protected]> Date: Mon Jun 22 15:13:50 2026 -0500 testsuite: Add PowerPC future hardware compiler support checks Add new effective-target procs to help write tests for future powerpc. "check_effective_target_powerpc_future_compile_ok" checks whether the compiler recognizes -mcpu=future (i.e., defines _ARCH_FUTURE). "check_effective_target_powerpc_future_assemble_ok" checks whether the assembler supports "powerpc future" instructions under -mcpu=future. "check_powerpc_future_hw_available" checks at runtime whether the hardware supports executing "powerpc future" instructions. 2026-06-04 Jeevitha Palanisamy <[email protected]> gcc/testsuite/ * lib/target-supports.exp (check_effective_target_powerpc_future_compile_ok): New target support procedure. (check_effective_target_powerpc_future_assemble_ok): Likewise. (check_powerpc_future_hw_available): Likewise. (is-effective-target): Register powerpc_future_hw. (is-effective-target-keyword): Likewise. (cherry picked from commit e6b0a8893bc95b1b3359e7c3a954dc8117e876a1) Diff: --- gcc/testsuite/lib/target-supports.exp | 50 +++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index 8823df7a95d4..7f790be14ddb 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -8029,6 +8029,54 @@ proc check_effective_target_power10_ok { } { } } +# Return 1 if this is a PowerPC target where the compiler supports +# compiling with -mcpu=future (i.e., the compiler recognizes _ARCH_FUTURE), +# return 0 otherwise. + +proc check_effective_target_powerpc_future_compile_ok { } { + return [check_no_compiler_messages_nocache powerpc_future_compile_ok assembly { + void test (void) { + #ifndef _ARCH_FUTURE + #error does not have powerpc future support. + #else + /* "has powerpc future support" */ + #endif + } + } "-mcpu=future"] +} + +# Return 1 if this is a PowerPC target where the assembler supports +# assembling future instructions with -mcpu=future (i.e., the assembler +# can assemble the subwus instruction), return 0 otherwise. + +proc check_effective_target_powerpc_future_assemble_ok { } { + return [check_no_compiler_messages_nocache powerpc_future_assemble_ok object { + unsigned int a, b, c; + int main (void) { + asm ("subwus %0,%1,%2" : "=r" (a) : "r" (b), "r" (c)); + return 0; + } + } "-mcpu=future"] +} + +# Return 1 if the target hardware supports executing PowerPC future +# instructions at runtime (i.e., the subwus instruction executes +# correctly), return 0 otherwise. + +proc check_powerpc_future_hw_available { } { + return [check_cached_effective_target powerpc_future_hw_available { + check_runtime_nocache powerpc_future_hw_available { + int main() { + unsigned int a = 5, b = 3, result = 0xDEADBEEF; + asm ("subwus %0,%1,%2" : "=r" (result) : "r" (a), "r" (b)); + if (result == 0) + return 0; + return 1; + } + } "-mcpu=future" + }] +} + # Return 1 if this is a PowerPC target supporting -mfloat128 via either # software emulation on power7/power8 systems or hardware support on power9. @@ -10684,6 +10732,7 @@ proc is-effective-target { arg } { "p9vector_hw" { set selected [check_p9vector_hw_available] } "p9modulo_hw" { set selected [check_p9modulo_hw_available] } "power10_hw" { set selected [check_power10_hw_available] } + "powerpc_future_hw" { set selected [check_powerpc_future_hw_available] } "ppc_float128_sw" { set selected [check_ppc_float128_sw_available] } "ppc_float128_hw" { set selected [check_ppc_float128_hw_available] } "ppc_recip_hw" { set selected [check_ppc_recip_hw_available] } @@ -10717,6 +10766,7 @@ proc is-effective-target-keyword { arg } { "p9vector_hw" { return 1 } "p9modulo_hw" { return 1 } "power10_hw" { return 1 } + "powerpc_future_hw" { return 1 } "ppc_float128_sw" { return 1 } "ppc_float128_hw" { return 1 } "ppc_recip_hw" { return 1 }
