1; PR1271
2; RUN: opt < %s -instcombine -S | \
3; RUN:    grep "icmp eq i32 .tmp.*, 2146435072"
4%struct..0anon = type { i32, i32 }
5%struct..1anon = type { double }
6
7define i32 @main() {
8entry:
9	%u = alloca %struct..1anon, align 8		; <%struct..1anon*> [#uses=4]
10	%tmp1 = getelementptr %struct..1anon* %u, i32 0, i32 0		; <double*> [#uses=1]
11	store double 0x7FF0000000000000, double* %tmp1
12	%tmp3 = getelementptr %struct..1anon* %u, i32 0, i32 0		; <double*> [#uses=1]
13	%tmp34 = bitcast double* %tmp3 to %struct..0anon*		; <%struct..0anon*> [#uses=1]
14	%tmp5 = getelementptr %struct..0anon* %tmp34, i32 0, i32 1		; <i32*> [#uses=1]
15	%tmp6 = load i32* %tmp5		; <i32> [#uses=1]
16	%tmp7 = shl i32 %tmp6, 1		; <i32> [#uses=1]
17	%tmp8 = lshr i32 %tmp7, 21		; <i32> [#uses=1]
18	%tmp89 = trunc i32 %tmp8 to i16		; <i16> [#uses=1]
19	icmp ne i16 %tmp89, 2047		; <i1>:0 [#uses=1]
20	zext i1 %0 to i8		; <i8>:1 [#uses=1]
21	icmp ne i8 %1, 0		; <i1>:2 [#uses=1]
22	br i1 %2, label %cond_true, label %cond_false
23
24cond_true:		; preds = %entry
25	ret i32 0
26
27cond_false:		; preds = %entry
28        ret i32 1
29}
30