; Test that this transform works: | |
; udiv X, (Select Cond, C1, C2) --> Select Cond, (shr X, C1), (shr X, C2) | |
; | |
; RUN: opt < %s -instcombine -S -o %t | |
; RUN: not grep select %t | |
; RUN: grep lshr %t | count 2 | |
; RUN: not grep udiv %t | |
define i64 @test(i64 %X, i1 %Cond ) { | |
entry: | |
%divisor1 = select i1 %Cond, i64 16, i64 8 | |
%quotient1 = udiv i64 %X, %divisor1 | |
%divisor2 = select i1 %Cond, i64 8, i64 0 | |
%quotient2 = udiv i64 %X, %divisor2 | |
%sum = add i64 %quotient1, %quotient2 | |
ret i64 %sum | |
} |