r217431 changed X30 as caller-saved in CALL_USE_REGISTERS because of which this comment about X30 not being marked as call-clobbered is no longer accurate.
Siddhesh * config/aarch64/aarch64.h: Remove obsolete comment. --- gcc/config/aarch64/aarch64.h | 9 --------- 1 file changed, 9 deletions(-) diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h index 976f9afae54..df9fb31aa64 100644 --- a/gcc/config/aarch64/aarch64.h +++ b/gcc/config/aarch64/aarch64.h @@ -303,15 +303,6 @@ extern unsigned aarch64_architecture_version; register. GCC internally uses the poly_int variable aarch64_sve_vg instead. */ -/* Note that we don't mark X30 as a call-clobbered register. The idea is - that it's really the call instructions themselves which clobber X30. - We don't care what the called function does with it afterwards. - - This approach makes it easier to implement sibcalls. Unlike normal - calls, sibcalls don't clobber X30, so the register reaches the - called function intact. EPILOGUE_USES says that X30 is useful - to the called function. */ - #define FIXED_REGISTERS \ { \ 0, 0, 0, 0, 0, 0, 0, 0, /* R0 - R7 */ \ -- 2.14.4