Add clobber(all)

Amanieu · Amanieu · commit 51d389442908 · 2020-01-11T22:02:30.000Z
diff --git a/rfcs/0000-inline-asm.md b/rfcs/0000-inline-asm.md
@@ -866,4 +866,4 @@ We should support some sort of shorthand notation for operand names to avoid nee
 
 Sometimes it can be difficult to specify the necessary clobbers for an asm block which performs a function call. In particular, it is difficult for such code to be forward-compatible if the architecture adds new registers in a future revision, which the compiler may use but will be missing from the `asm!` clobber list.
 
-One possible solution to this would be to add a `clobber(<abi>)` operand where `<abi>` is a calling convention such as `"C"` or `"stdcall"`. The compiler would then automatically insert the necessary clobbers for a function call to that ABI.
+One possible solution to this would be to add a `clobber(<abi>)` operand where `<abi>` is a calling convention such as `"C"` or `"stdcall"`. The compiler would then automatically insert the necessary clobbers for a function call to that ABI. Also `clobber(all)`, could be used to indicate all registers are clobbered by the `asm!`.

Original file line number	Diff line number	Diff line change
`@@ -866,4 +866,4 @@ We should support some sort of shorthand notation for operand names to avoid nee`
`866`	`866`
`867`	`867`	Sometimes it can be difficult to specify the necessary clobbers for an asm block which performs a function call. In particular, it is difficult for such code to be forward-compatible if the architecture adds new registers in a future revision, which the compiler may use but will be missing from the `asm!` clobber list.
`868`	`868`
`869`		-One possible solution to this would be to add a `clobber(<abi>)` operand where `<abi>` is a calling convention such as `"C"` or `"stdcall"`. The compiler would then automatically insert the necessary clobbers for a function call to that ABI.
	`869`	+One possible solution to this would be to add a `clobber(<abi>)` operand where `<abi>` is a calling convention such as `"C"` or `"stdcall"`. The compiler would then automatically insert the necessary clobbers for a function call to that ABI. Also `clobber(all)`, could be used to indicate all registers are clobbered by the `asm!`.