2007-04-13 22:33:10 +00:00
|
|
|
; This is a basic sanity check for constant propogation. It tests the basic
|
|
|
|
; logic operations.
|
|
|
|
|
|
|
|
|
2009-09-08 22:57:49 +00:00
|
|
|
; RUN: opt < %s -sccp -S | not grep and
|
|
|
|
; RUN: opt < %s -sccp -S | not grep trunc
|
|
|
|
; RUN: opt < %s -sccp -S | grep {ret i100 -1}
|
2007-04-13 22:33:10 +00:00
|
|
|
|
|
|
|
define i100 @test(i133 %A) {
|
|
|
|
%B = and i133 0, %A
|
|
|
|
%C = icmp sgt i133 %B, 0
|
|
|
|
br i1 %C, label %BB1, label %BB2
|
|
|
|
BB1:
|
|
|
|
%t3 = xor i133 %B, -1
|
|
|
|
%t4 = trunc i133 %t3 to i100
|
|
|
|
br label %BB3
|
|
|
|
BB2:
|
|
|
|
%f1 = or i133 -1, %A
|
|
|
|
%f2 = lshr i133 %f1, 33
|
|
|
|
%f3 = trunc i133 %f2 to i100
|
|
|
|
br label %BB3
|
|
|
|
BB3:
|
|
|
|
%Ret = phi i100 [%t4, %BB1], [%f3, %BB2]
|
|
|
|
ret i100 %Ret
|
|
|
|
}
|