llvm-6502/test/Transforms/InstCombine/2010-11-01-lshr-mask.ll
Duncan Sands ee9a2e322a Have SimplifyBinOp dispatch Xor, Add and Sub to the corresponding methods
(they had just been forgotten before).  Adding Xor causes "main" in the
existing testcase 2010-11-01-lshr-mask.ll to be hugely more simplified.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122245 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 14:47:04 +00:00

47 lines
1.1 KiB
LLVM

; RUN: opt -instcombine -S < %s | FileCheck %s
; <rdar://problem/8606771>
; CHECK: @main
define i32 @main(i32 %argc) nounwind ssp {
entry:
%tmp3151 = trunc i32 %argc to i8
; CHECK: %tmp3162 = shl i8 %tmp3151, 5
; CHECK: and i8 %tmp3162, 64
; CHECK-NOT: shl
; CHECK-NOT: shr
%tmp3161 = or i8 %tmp3151, -17
%tmp3162 = and i8 %tmp3151, 122
%tmp3163 = xor i8 %tmp3162, -17
%tmp4114 = shl i8 %tmp3163, 6
%tmp4115 = xor i8 %tmp4114, %tmp3163
%tmp4120 = xor i8 %tmp3161, %tmp4115
%tmp4126 = lshr i8 %tmp4120, 7
%tmp4127 = mul i8 %tmp4126, 64
%tmp4086 = zext i8 %tmp4127 to i32
; CHECK: ret i32
ret i32 %tmp4086
}
; rdar://8739316
; CHECK: @foo
define i8 @foo(i8 %arg, i8 %arg1) nounwind {
bb:
%tmp = shl i8 %arg, 7
%tmp2 = and i8 %arg1, 84
%tmp3 = and i8 %arg1, -118
%tmp4 = and i8 %arg1, 33
%tmp5 = sub i8 -88, %tmp2
%tmp6 = and i8 %tmp5, 84
%tmp7 = or i8 %tmp4, %tmp6
%tmp8 = xor i8 %tmp, %tmp3
%tmp9 = or i8 %tmp7, %tmp8
%tmp10 = lshr i8 %tmp8, 7
%tmp11 = shl i8 %tmp10, 5
; CHECK: %0 = lshr i8 %tmp8, 2
; CHECK: %tmp11 = and i8 %0, 32
%tmp12 = xor i8 %tmp11, %tmp9
ret i8 %tmp12
}