diff --git a/doc/asm.html b/doc/asm.html index dbbe8f2cd1..cc8598aeff 100644 --- a/doc/asm.html +++ b/doc/asm.html @@ -687,6 +687,13 @@ MOVQ g(CX), AX // Move g into AX. MOVQ g_m(AX), BX // Move g.m into BX. +
+Register BP
is callee-save.
+The assembler automatically inserts BP
save/restore when frame size is larger than zero.
+Using BP
as a general purpose register is allowed,
+however it can interfere with sampling-based profiling.
+