xref: /aosp_15_r20/external/llvm/test/CodeGen/X86/2009-07-20-DAGCombineBug.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker@bsBuff = internal global i32 0		; <i32*> [#uses=1]
4*9880d681SAndroid Build Coastguard Worker@llvm.used = appending global [1 x i8*] [i8* bitcast (i32 ()* @bsGetUInt32 to i8*)], section "llvm.metadata"		; <[1 x i8*]*> [#uses=0]
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdefine fastcc i32 @bsGetUInt32() nounwind ssp {
7*9880d681SAndroid Build Coastguard Workerentry:
8*9880d681SAndroid Build Coastguard Worker	%bsBuff.promoted44 = load i32, i32* @bsBuff		; <i32> [#uses=1]
9*9880d681SAndroid Build Coastguard Worker	%0 = add i32 0, -8		; <i32> [#uses=1]
10*9880d681SAndroid Build Coastguard Worker	%1 = lshr i32 %bsBuff.promoted44, %0		; <i32> [#uses=1]
11*9880d681SAndroid Build Coastguard Worker	%2 = shl i32 %1, 8		; <i32> [#uses=1]
12*9880d681SAndroid Build Coastguard Worker	br label %bb3.i17
13*9880d681SAndroid Build Coastguard Worker
14*9880d681SAndroid Build Coastguard Workerbb3.i9:		; preds = %bb3.i17
15*9880d681SAndroid Build Coastguard Worker	br i1 false, label %bb2.i16, label %bb1.i15
16*9880d681SAndroid Build Coastguard Worker
17*9880d681SAndroid Build Coastguard Workerbb1.i15:		; preds = %bb3.i9
18*9880d681SAndroid Build Coastguard Worker	unreachable
19*9880d681SAndroid Build Coastguard Worker
20*9880d681SAndroid Build Coastguard Workerbb2.i16:		; preds = %bb3.i9
21*9880d681SAndroid Build Coastguard Worker	br label %bb3.i17
22*9880d681SAndroid Build Coastguard Worker
23*9880d681SAndroid Build Coastguard Workerbb3.i17:		; preds = %bb2.i16, %entry
24*9880d681SAndroid Build Coastguard Worker	br i1 false, label %bb3.i9, label %bsR.exit18
25*9880d681SAndroid Build Coastguard Worker
26*9880d681SAndroid Build Coastguard WorkerbsR.exit18:		; preds = %bb3.i17
27*9880d681SAndroid Build Coastguard Worker	%3 = or i32 0, %2		; <i32> [#uses=0]
28*9880d681SAndroid Build Coastguard Worker	ret i32 0
29*9880d681SAndroid Build Coastguard Worker}
30