mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 20:12:56 +02:00
20 lines
664 B
LLVM
20 lines
664 B
LLVM
; RUN: opt %s -instcombine -S | \
|
|
; RUN: grep {lshr i32} | count 2
|
|
; RUN: opt %s -instcombine -S | not grep ashr
|
|
|
|
|
|
define i32 @test1(i32 %X, i8 %A) {
|
|
%shift.upgrd.1 = zext i8 %A to i32 ; <i32> [#uses=1]
|
|
; can be logical shift.
|
|
%Y = ashr i32 %X, %shift.upgrd.1 ; <i32> [#uses=1]
|
|
%Z = and i32 %Y, 1 ; <i32> [#uses=1]
|
|
ret i32 %Z
|
|
}
|
|
|
|
define i32 @test2(i8 %tmp) {
|
|
%tmp3 = zext i8 %tmp to i32 ; <i32> [#uses=1]
|
|
%tmp4 = add i32 %tmp3, 7 ; <i32> [#uses=1]
|
|
%tmp5 = ashr i32 %tmp4, 3 ; <i32> [#uses=1]
|
|
ret i32 %tmp5
|
|
}
|