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Pre-approved with the requested changes here . gcc/testsuite/ChangeLog: * testsuite/lib/target-supports.exp: (check_effective_target_arm_pacbti_hw): New. * doc/sourcebuild.texi: Document arm_pacbti_hw. Co-Authored-By: Tejas Belagod diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index 613ac29967b..e8cbd8e4aef 100644 --- a/gcc/doc/sourcebuild.texi +++ b/gcc/doc/sourcebuild.texi @@ -2167,6 +2167,10 @@ ARM target supports options to generate instructions from ARMv8.1-M with the Custom Datapath Extension (CDE) and M-Profile Vector Extension (MVE). Some multilibs may be incompatible with these options. +@item arm_pacbti_hw +Test system supports executing Pointer Authentication and Branch Target +Identification instructions. + @item arm_prefer_ldrd_strd ARM target prefers @code{LDRD} and @code{STRD} instructions over @code{LDM} and @code{STM} instructions. diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index ff8edbd3e17..df8ab037fb3 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -5090,6 +5090,22 @@ proc check_effective_target_arm_cmse_clear_ok {} { } "-mcmse"]; } +# Return 1 if the target supports executing PACBTI instructions, 0 +# otherwise. + +proc check_effective_target_arm_pacbti_hw {} { + return [check_runtime arm_pacbti_hw_available { + __attribute__ ((naked)) int + main (void) + { + asm ("pac r12, lr, sp"); + asm ("mov r0, #0"); + asm ("autg r12, lr, sp"); + asm ("bx lr"); + } + } ""] +} + # Return 1 if this compilation turns on string_ops_prefer_neon on. proc check_effective_target_arm_tune_string_ops_prefer_neon { } {