2 ; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s --check-prefix=ASM
3 ; RUN: llc -debug -o /dev/null < %s -mtriple=x86_64-- 2>&1 | FileCheck %s --check-prefix=DBG
6 ; This testcase involves SCEV normalization with the exit value from
7 ; one loop involved with the increment value for an addrec on another
8 ; loop. The expression should be properly normalized and simplified,
9 ; and require only a single division.
11 ; DBG-NOT: DISCARDING (NORMALIZATION ISN'T INVERTIBLE)
15 %0 = type { ptr, ptr }
17 @0 = private constant [13 x i8] c"Result: %lu\0A\00" ; <ptr> [#uses=1]
18 @1 = internal constant [5 x i8] c"Huh?\00" ; <ptr> [#uses=1]
20 define i32 @main(i32 %arg, ptr nocapture %arg1) nounwind {
22 %tmp = alloca %0, align 8 ; <ptr> [#uses=11]
23 call void @llvm.memset.p0.i64(ptr align 8 %tmp, i8 0, i64 16, i1 false) nounwind
24 %tmp3 = getelementptr inbounds %0, ptr %tmp, i64 0, i32 0 ; <ptr> [#uses=3]
25 store ptr %tmp, ptr %tmp3
26 %tmp4 = getelementptr inbounds %0, ptr %tmp, i64 0, i32 1 ; <ptr> [#uses=1]
27 store ptr %tmp, ptr %tmp4
28 %tmp5 = call noalias ptr @_Znwm(i64 24) nounwind ; <ptr> [#uses=2]
29 %tmp6 = getelementptr inbounds i8, ptr %tmp5, i64 16 ; <ptr> [#uses=2]
30 %tmp7 = icmp eq ptr %tmp6, null ; <i1> [#uses=1]
31 br i1 %tmp7, label %bb10, label %bb8
34 store i32 1, ptr %tmp6
37 bb10: ; preds = %bb8, %bb
38 call void @_ZNSt15_List_node_base4hookEPS_(ptr %tmp5, ptr %tmp) nounwind
39 %tmp12 = load ptr, ptr %tmp3 ; <ptr> [#uses=3]
40 %tmp13 = icmp eq ptr %tmp12, %tmp ; <i1> [#uses=1]
41 br i1 %tmp13, label %bb14, label %bb16
44 %tmp15 = call i32 @puts(ptr @1)
47 bb16: ; preds = %bb16, %bb10
48 %tmp17 = phi i64 [ %tmp22, %bb16 ], [ 0, %bb10 ] ; <i64> [#uses=1]
49 %tmp18 = phi ptr [ %tmp20, %bb16 ], [ %tmp12, %bb10 ] ; <ptr> [#uses=1]
50 %tmp19 = getelementptr inbounds %0, ptr %tmp18, i64 0, i32 0 ; <ptr> [#uses=1]
51 %tmp20 = load ptr, ptr %tmp19 ; <ptr> [#uses=2]
52 %tmp21 = icmp eq ptr %tmp20, %tmp ; <i1> [#uses=1]
53 %tmp22 = add i64 %tmp17, 1 ; <i64> [#uses=2]
54 br i1 %tmp21, label %bb23, label %bb16
57 %tmp24 = udiv i64 100, %tmp22 ; <i64> [#uses=1]
60 bb25: ; preds = %bb25, %bb23
61 %tmp26 = phi i64 [ %tmp31, %bb25 ], [ 0, %bb23 ] ; <i64> [#uses=1]
62 %tmp27 = phi ptr [ %tmp29, %bb25 ], [ %tmp12, %bb23 ] ; <ptr> [#uses=1]
63 %tmp28 = getelementptr inbounds %0, ptr %tmp27, i64 0, i32 0 ; <ptr> [#uses=1]
64 %tmp29 = load ptr, ptr %tmp28 ; <ptr> [#uses=2]
65 %tmp30 = icmp eq ptr %tmp29, %tmp ; <i1> [#uses=1]
66 %tmp31 = add i64 %tmp26, 1 ; <i64> [#uses=2]
67 br i1 %tmp30, label %bb32, label %bb25
70 %tmp33 = mul i64 %tmp31, %tmp24 ; <i64> [#uses=1]
71 %tmp34 = call i32 (ptr, ...) @printf(ptr @0, i64 %tmp33) nounwind
74 bb35: ; preds = %bb32, %bb14
75 %tmp36 = load ptr, ptr %tmp3 ; <ptr> [#uses=2]
76 %tmp37 = icmp eq ptr %tmp36, %tmp ; <i1> [#uses=1]
77 br i1 %tmp37, label %bb44, label %bb38
79 bb38: ; preds = %bb38, %bb35
80 %tmp39 = phi ptr [ %tmp41, %bb38 ], [ %tmp36, %bb35 ] ; <ptr> [#uses=2]
81 %tmp40 = getelementptr inbounds %0, ptr %tmp39, i64 0, i32 0 ; <ptr> [#uses=1]
82 %tmp41 = load ptr, ptr %tmp40 ; <ptr> [#uses=2]
83 call void @_ZdlPv(ptr %tmp39) nounwind
84 %tmp43 = icmp eq ptr %tmp41, %tmp ; <i1> [#uses=1]
85 br i1 %tmp43, label %bb44, label %bb38
87 bb44: ; preds = %bb38, %bb35
91 declare i32 @printf(ptr nocapture, ...) nounwind
93 declare void @_ZNSt15_List_node_base4hookEPS_(ptr, ptr)
95 declare noalias ptr @_Znwm(i64)
97 declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind
99 declare void @_ZdlPv(ptr) nounwind
101 declare i32 @puts(ptr nocapture) nounwind