mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
28beeeac4d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41097 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
578 B
LLVM
18 lines
578 B
LLVM
; Test that this transform works:
|
|
; udiv X, (Select Cond, C1, C2) --> Select Cond, (shr X, C1), (shr X, C2)
|
|
;
|
|
; RUN: llvm-as < %s | opt -instcombine | llvm-dis -f -o %t
|
|
; RUN: grep select %t | count 1
|
|
; RUN: grep lshr %t | count 2
|
|
; RUN: ignore grep udiv %t | count 0
|
|
|
|
define i64 @test(i64 %X, i1 %Cond ) {
|
|
entry:
|
|
%divisor1 = select i1 %Cond, i64 8, i64 16
|
|
%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
|
|
}
|