1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=hardware-loops -verify-loop-lcssa -S | FileCheck %s
4 target datalayout = "E-m:e-i64:64-n32:64"
5 target triple = "ppc64-unknown-linux-elf"
7 declare i1 @cond() readnone
9 ; Make sure we do not crash on the test.
14 ; CHECK-NEXT: br label [[WHILE_COND:%.*]]
16 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
18 ; CHECK-NEXT: br label [[FOR_INC:%.*]]
20 ; CHECK-NEXT: [[C_0:%.*]] = call i1 @cond()
21 ; CHECK-NEXT: br i1 [[C_0]], label [[WHILE_COND25_PREHEADER:%.*]], label [[FOR_BODY]]
22 ; CHECK: while.cond25.preheader:
23 ; CHECK-NEXT: [[INDVARS_IV349_PH:%.*]] = phi i64 [ 50, [[FOR_INC]] ]
24 ; CHECK-NEXT: call void @llvm.set.loop.iterations.i64(i64 51)
25 ; CHECK-NEXT: br label [[WHILE_COND25:%.*]]
26 ; CHECK: while.cond25:
27 ; CHECK-NEXT: [[INDVAR:%.*]] = phi i64 [ 0, [[WHILE_COND25_PREHEADER]] ], [ [[INDVAR_NEXT:%.*]], [[LAND_RHS:%.*]] ]
28 ; CHECK-NEXT: [[INDVARS_IV349:%.*]] = phi i64 [ [[INDVARS_IV_NEXT350:%.*]], [[LAND_RHS]] ], [ [[INDVARS_IV349_PH]], [[WHILE_COND25_PREHEADER]] ]
29 ; CHECK-NEXT: [[TMP0:%.*]] = call i1 @llvm.loop.decrement.i64(i64 1)
30 ; CHECK-NEXT: br i1 [[TMP0]], label [[LAND_RHS]], label [[WHILE_END187:%.*]]
32 ; CHECK-NEXT: [[INDVARS_IV_NEXT350]] = add nsw i64 [[INDVARS_IV349]], -1
33 ; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
34 ; CHECK-NEXT: [[INDVAR_NEXT]] = add i64 [[INDVAR]], 1
35 ; CHECK-NEXT: br i1 [[C_1]], label [[WHILE_COND25]], label [[WHILE_END:%.*]]
37 ; CHECK-NEXT: [[INDVAR_LCSSA1:%.*]] = phi i64 [ [[INDVAR]], [[LAND_RHS]] ]
38 ; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
39 ; CHECK-NEXT: br i1 [[C_2]], label [[WHILE_END187]], label [[WHILE_COND35_PREHEADER:%.*]]
40 ; CHECK: while.cond35.preheader:
41 ; CHECK-NEXT: [[TMP1:%.*]] = mul nsw i64 [[INDVAR_LCSSA1]], -1
42 ; CHECK-NEXT: [[TMP2:%.*]] = add i64 [[TMP1]], 51
43 ; CHECK-NEXT: call void @llvm.set.loop.iterations.i64(i64 [[TMP2]])
44 ; CHECK-NEXT: br label [[WHILE_COND35:%.*]]
45 ; CHECK: while.cond35:
46 ; CHECK-NEXT: [[TMP3:%.*]] = call i1 @llvm.loop.decrement.i64(i64 1)
47 ; CHECK-NEXT: br i1 [[TMP3]], label [[LAND_RHS37:%.*]], label [[IF_END51:%.*]]
49 ; CHECK-NEXT: br label [[WHILE_COND35]]
51 ; CHECK-NEXT: br label [[WHILE_COND_BACKEDGE:%.*]]
52 ; CHECK: while.cond.backedge:
53 ; CHECK-NEXT: br label [[WHILE_COND]]
54 ; CHECK: while.end187:
55 ; CHECK-NEXT: ret void
60 while.cond: ; preds = %while.cond.backedge, %entry
63 for.body: ; preds = %for.inc, %while.cond
66 for.inc: ; preds = %for.body
67 %c.0 = call i1 @cond()
68 br i1 %c.0, label %while.cond25, label %for.body
70 while.cond25: ; preds = %land.rhs, %for.inc
71 %indvars.iv349 = phi i64 [ %indvars.iv.next350, %land.rhs ], [ 50, %for.inc ]
72 %cmp26.not = icmp eq i64 %indvars.iv349, 0
73 br i1 %cmp26.not, label %while.end187, label %land.rhs
75 land.rhs: ; preds = %while.cond25
76 %indvars.iv.next350 = add nsw i64 %indvars.iv349, -1
77 %c.1 = call i1 @cond()
78 br i1 %c.1, label %while.cond25, label %while.end
80 while.end: ; preds = %land.rhs
81 %c.2 = call i1 @cond()
82 br i1 %c.2, label %while.end187, label %while.cond35.preheader
84 while.cond35.preheader: ; preds = %while.end
85 %0 = and i64 %indvars.iv349, 4294967295
86 br label %while.cond35
88 while.cond35: ; preds = %land.rhs37, %while.cond35.preheader
89 %indvars.iv351 = phi i64 [ %0, %while.cond35.preheader ], [ %indvars.iv.next352, %land.rhs37 ]
90 %cmp36 = icmp sgt i64 %indvars.iv351, 0
91 br i1 %cmp36, label %land.rhs37, label %if.end51
93 land.rhs37: ; preds = %while.cond35
94 %indvars.iv.next352 = add nsw i64 %indvars.iv351, -1
95 br label %while.cond35
97 if.end51: ; preds = %while.cond35
98 br label %while.cond.backedge
100 while.cond.backedge: ; preds = %if.end51
103 while.end187: ; preds = %while.end, %while.cond25