2003-11-03 13:30:34 +08:00
|
|
|
; This tests for various complex cast elimination cases instcombine should
|
|
|
|
; handle.
|
2002-08-13 03:18:49 +08:00
|
|
|
|
2003-09-16 23:29:54 +08:00
|
|
|
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep cast
|
2002-05-16 01:22:01 +08:00
|
|
|
|
2002-08-16 03:38:03 +08:00
|
|
|
bool %test1(int %X) {
|
2002-05-16 01:22:01 +08:00
|
|
|
%A = cast int %X to uint
|
2003-07-24 07:21:08 +08:00
|
|
|
%c = setne uint %A, 12 ; Convert to setne int %X, 12
|
2002-05-16 01:22:01 +08:00
|
|
|
ret bool %c
|
|
|
|
}
|
|
|
|
|
2002-08-16 03:38:03 +08:00
|
|
|
bool %test2(int %X, int %Y) {
|
2002-05-16 01:22:01 +08:00
|
|
|
%A = cast int %X to uint
|
|
|
|
%B = cast int %Y to uint
|
|
|
|
%c = setne uint %A, %B ; Convert to setne int %X, %Y
|
|
|
|
ret bool %c
|
|
|
|
}
|
|
|
|
|
2003-03-06 06:50:55 +08:00
|
|
|
int %test4(int %A) {
|
|
|
|
%B = cast int %A to uint
|
2003-07-24 07:21:08 +08:00
|
|
|
%C = shl uint %B, ubyte 2
|
2003-03-06 06:50:55 +08:00
|
|
|
%D = cast uint %C to int
|
|
|
|
ret int %D
|
|
|
|
}
|
|
|
|
|
2003-07-24 07:21:08 +08:00
|
|
|
short %test5(short %A) {
|
|
|
|
%B = cast short %A to uint
|
|
|
|
%C = and uint %B, 15
|
|
|
|
%D = cast uint %C to short
|
|
|
|
ret short %D
|
|
|
|
}
|
2003-11-03 11:51:26 +08:00
|
|
|
|
|
|
|
bool %test6(bool %A) {
|
|
|
|
%B = cast bool %A to int
|
|
|
|
%C = setne int %B, 0
|
|
|
|
ret bool %C
|
|
|
|
}
|
2003-11-03 11:52:34 +08:00
|
|
|
|
2003-11-03 13:08:53 +08:00
|
|
|
bool %test6a(bool %A) {
|
|
|
|
%B = cast bool %A to int
|
|
|
|
%C = setne int %B, -1 ; Always true!
|
|
|
|
ret bool %C
|
|
|
|
}
|
|
|
|
|
2003-11-03 11:52:34 +08:00
|
|
|
bool %test7(sbyte* %A) {
|
|
|
|
%B = cast sbyte* %A to int*
|
|
|
|
%C = seteq int* %B, null
|
|
|
|
ret bool %C
|
|
|
|
}
|