llvm-mirror/test/Transforms/InstCombine/2008-01-06-VoidCast.ll

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep bitcast

define void @f(i16 %y) {
	ret void
}

define i32 @g(i32 %y) {
	%x = call i32 bitcast (void (i16)* @f to i32 (i32)*)( i32 %y )		; <i32> [#uses=1]
	ret i32 %x
}
When transforming a call to a bitcast function into a direct call with cast parameters and cast return value (if any), instcombine was prepared to cast any non-void return value into any other, whether castable or not. Add a new predicate for testing whether casting is valid, and check it both for the return value and (as a cleanup) for the parameters. llvm-svn: 45657 2008-01-06 11:12:28 +01:00			`; RUN: llvm-as < %s \| opt -instcombine \| llvm-dis \| not grep bitcast`

			`define void @f(i16 %y) {`
			`ret void`
			`}`

			`define i32 @g(i32 %y) {`
			`%x = call i32 bitcast (void (i16)* @f to i32 (i32)*)( i32 %y ) ; <i32> [#uses=1]`
			`ret i32 %x`
			`}`