forked from OSchip/llvm-project
45 lines
945 B
LLVM
45 lines
945 B
LLVM
; This test makes sure that these instructions are properly eliminated.
|
|
|
|
; RUN: opt < %s -instcombine -S | not grep select
|
|
|
|
|
|
define i41 @test1(i1 %C) {
|
|
%V = select i1 %C, i41 1, i41 0 ; V = C
|
|
ret i41 %V
|
|
}
|
|
|
|
define i999 @test2(i1 %C) {
|
|
%V = select i1 %C, i999 0, i999 1 ; V = C
|
|
ret i999 %V
|
|
}
|
|
|
|
define i41 @test3(i41 %X) {
|
|
;; (x <s 0) ? -1 : 0 -> ashr x, 31
|
|
%t = icmp slt i41 %X, 0
|
|
%V = select i1 %t, i41 -1, i41 0
|
|
ret i41 %V
|
|
}
|
|
|
|
define i1023 @test4(i1023 %X) {
|
|
;; (x <s 0) ? -1 : 0 -> ashr x, 31
|
|
%t = icmp slt i1023 %X, 0
|
|
%V = select i1 %t, i1023 -1, i1023 0
|
|
ret i1023 %V
|
|
}
|
|
|
|
define i41 @test5(i41 %X) {
|
|
;; ((X & 27) ? 27 : 0)
|
|
%Y = and i41 %X, 32
|
|
%t = icmp ne i41 %Y, 0
|
|
%V = select i1 %t, i41 32, i41 0
|
|
ret i41 %V
|
|
}
|
|
|
|
define i1023 @test6(i1023 %X) {
|
|
;; ((X & 27) ? 27 : 0)
|
|
%Y = and i1023 %X, 64
|
|
%t = icmp ne i1023 %Y, 0
|
|
%V = select i1 %t, i1023 64, i1023 0
|
|
ret i1023 %V
|
|
}
|