mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-08 21:32:39 +00:00
18 lines
611 B
LLVM
18 lines
611 B
LLVM
|
; This tests that this transform:
|
||
|
|
; udiv X, (Select Cond, C1, C2) --> Select Cond, (shr X, C1), (shr X, C2)
|
||
|
|
;
|
||
|
|
; RUN: llvm-as %s -o - | opt -instcombine | llvm-dis -f -o %t && \
|
||
|
|
; RUN: grep select %t | wc -l | grep 1 && \
|
||
|
|
; RUN: grep lshr %t | wc -l | grep 2 && \
|
||
|
|
; RUN: grep udiv %t | wc -l | grep 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
|
||
|
|
}
|