mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
2f69f6a822
The only difference is that EvaluateInDifferentType checks to ensure they are profitable before doing them :) llvm-svn: 92788
75 lines
2.6 KiB
LLVM
75 lines
2.6 KiB
LLVM
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
|
|
|
|
; RUN: opt < %s -instcombine -S | \
|
|
; RUN: grep {call.*llvm.bswap} | count 6
|
|
|
|
define i32 @test1(i32 %i) {
|
|
%tmp1 = lshr i32 %i, 24 ; <i32> [#uses=1]
|
|
%tmp3 = lshr i32 %i, 8 ; <i32> [#uses=1]
|
|
%tmp4 = and i32 %tmp3, 65280 ; <i32> [#uses=1]
|
|
%tmp5 = or i32 %tmp1, %tmp4 ; <i32> [#uses=1]
|
|
%tmp7 = shl i32 %i, 8 ; <i32> [#uses=1]
|
|
%tmp8 = and i32 %tmp7, 16711680 ; <i32> [#uses=1]
|
|
%tmp9 = or i32 %tmp5, %tmp8 ; <i32> [#uses=1]
|
|
%tmp11 = shl i32 %i, 24 ; <i32> [#uses=1]
|
|
%tmp12 = or i32 %tmp9, %tmp11 ; <i32> [#uses=1]
|
|
ret i32 %tmp12
|
|
}
|
|
|
|
define i32 @test2(i32 %arg) {
|
|
%tmp2 = shl i32 %arg, 24 ; <i32> [#uses=1]
|
|
%tmp4 = shl i32 %arg, 8 ; <i32> [#uses=1]
|
|
%tmp5 = and i32 %tmp4, 16711680 ; <i32> [#uses=1]
|
|
%tmp6 = or i32 %tmp2, %tmp5 ; <i32> [#uses=1]
|
|
%tmp8 = lshr i32 %arg, 8 ; <i32> [#uses=1]
|
|
%tmp9 = and i32 %tmp8, 65280 ; <i32> [#uses=1]
|
|
%tmp10 = or i32 %tmp6, %tmp9 ; <i32> [#uses=1]
|
|
%tmp12 = lshr i32 %arg, 24 ; <i32> [#uses=1]
|
|
%tmp14 = or i32 %tmp10, %tmp12 ; <i32> [#uses=1]
|
|
ret i32 %tmp14
|
|
}
|
|
|
|
define i16 @test3(i16 %s) {
|
|
%tmp2 = lshr i16 %s, 8 ; <i16> [#uses=1]
|
|
%tmp4 = shl i16 %s, 8 ; <i16> [#uses=1]
|
|
%tmp5 = or i16 %tmp2, %tmp4 ; <i16> [#uses=1]
|
|
ret i16 %tmp5
|
|
}
|
|
|
|
define i16 @test4(i16 %s) {
|
|
%tmp2 = lshr i16 %s, 8 ; <i16> [#uses=1]
|
|
%tmp4 = shl i16 %s, 8 ; <i16> [#uses=1]
|
|
%tmp5 = or i16 %tmp4, %tmp2 ; <i16> [#uses=1]
|
|
ret i16 %tmp5
|
|
}
|
|
|
|
define i16 @test5(i16 %a) {
|
|
%tmp = zext i16 %a to i32 ; <i32> [#uses=2]
|
|
%tmp1 = and i32 %tmp, 65280 ; <i32> [#uses=1]
|
|
%tmp2 = ashr i32 %tmp1, 8 ; <i32> [#uses=1]
|
|
%tmp2.upgrd.1 = trunc i32 %tmp2 to i16 ; <i16> [#uses=1]
|
|
%tmp4 = and i32 %tmp, 255 ; <i32> [#uses=1]
|
|
%tmp5 = shl i32 %tmp4, 8 ; <i32> [#uses=1]
|
|
%tmp5.upgrd.2 = trunc i32 %tmp5 to i16 ; <i16> [#uses=1]
|
|
%tmp.upgrd.3 = or i16 %tmp2.upgrd.1, %tmp5.upgrd.2 ; <i16> [#uses=1]
|
|
%tmp6 = bitcast i16 %tmp.upgrd.3 to i16 ; <i16> [#uses=1]
|
|
%tmp6.upgrd.4 = zext i16 %tmp6 to i32 ; <i32> [#uses=1]
|
|
%retval = trunc i32 %tmp6.upgrd.4 to i16 ; <i16> [#uses=1]
|
|
ret i16 %retval
|
|
}
|
|
|
|
; PR2842
|
|
define i32 @test6(i32 %x) nounwind readnone {
|
|
%tmp = shl i32 %x, 16 ; <i32> [#uses=1]
|
|
%x.mask = and i32 %x, 65280 ; <i32> [#uses=1]
|
|
%tmp1 = lshr i32 %x, 16 ; <i32> [#uses=1]
|
|
%tmp2 = and i32 %tmp1, 255 ; <i32> [#uses=1]
|
|
%tmp3 = or i32 %x.mask, %tmp ; <i32> [#uses=1]
|
|
%tmp4 = or i32 %tmp3, %tmp2 ; <i32> [#uses=1]
|
|
%tmp5 = shl i32 %tmp4, 8 ; <i32> [#uses=1]
|
|
%tmp6 = lshr i32 %x, 24 ; <i32> [#uses=1]
|
|
%tmp7 = or i32 %tmp5, %tmp6 ; <i32> [#uses=1]
|
|
ret i32 %tmp7
|
|
}
|
|
|