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 7 define i32 @main() { 8 entry: 9 %u = alloca %struct..1anon, align 8 ; <%struct..1anon*> [#uses=4] 10 %tmp1 = getelementptr %struct..1anon, %struct..1anon* %u, i32 0, i32 0 ; <double*> [#uses=1] 11 store double 0x7FF0000000000000, double* %tmp1 12 %tmp3 = getelementptr %struct..1anon, %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, %struct..0anon* %tmp34, i32 0, i32 1 ; <i32*> [#uses=1] 15 %tmp6 = load i32, 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 24 cond_true: ; preds = %entry 25 ret i32 0 26 27 cond_false: ; preds = %entry 28 ret i32 1 29 } 30
