xref: /llvm-project/llvm/test/Transforms/StructurizeCFG/one-loop-multiple-backedges.ll (revision bf6f82a9df6a1693a5399039dcadd7fc00dab65e)
118557c26SJay Foad; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2cee313d2SEric Christopher; RUN: opt -S -structurizecfg %s -o - | FileCheck %s
3cee313d2SEric Christopher
4cee313d2SEric Christopher; CHECK-NOT: br i1 true
5cee313d2SEric Christopher
6*bf6f82a9SMatt Arsenaultdefine void @blam(ptr addrspace(1) nocapture %arg, float %arg1, float %arg2) {
718557c26SJay Foad; CHECK-LABEL: @blam(
818557c26SJay Foad; CHECK-NEXT:  bb:
918557c26SJay Foad; CHECK-NEXT:    br label [[BB3:%.*]]
1018557c26SJay Foad; CHECK:       bb3:
1140e9284fSRuiling Song; CHECK-NEXT:    [[TMP:%.*]] = phi i64 [ 0, [[BB:%.*]] ], [ [[TMP2:%.*]], [[FLOW1:%.*]] ]
1218557c26SJay Foad; CHECK-NEXT:    [[TMP4:%.*]] = fcmp ult float [[ARG1:%.*]], 3.500000e+00
1318557c26SJay Foad; CHECK-NEXT:    [[TMP4_INV:%.*]] = xor i1 [[TMP4]], true
1418557c26SJay Foad; CHECK-NEXT:    br i1 [[TMP4_INV]], label [[BB5:%.*]], label [[FLOW:%.*]]
1518557c26SJay Foad; CHECK:       bb5:
1618557c26SJay Foad; CHECK-NEXT:    [[TMP6:%.*]] = fcmp uge float 0.000000e+00, [[ARG2:%.*]]
1718557c26SJay Foad; CHECK-NEXT:    br label [[FLOW]]
1818557c26SJay Foad; CHECK:       Flow:
1940e9284fSRuiling Song; CHECK-NEXT:    [[TMP0:%.*]] = phi i32 [ 15, [[BB5]] ], [ undef, [[BB3]] ]
2040e9284fSRuiling Song; CHECK-NEXT:    [[TMP1:%.*]] = phi i1 [ [[TMP6]], [[BB5]] ], [ [[TMP4]], [[BB3]] ]
2140e9284fSRuiling Song; CHECK-NEXT:    br i1 [[TMP1]], label [[BB7:%.*]], label [[FLOW1]]
2218557c26SJay Foad; CHECK:       bb7:
2318557c26SJay Foad; CHECK-NEXT:    [[TMP8:%.*]] = add nuw nsw i64 [[TMP]], 1
2418557c26SJay Foad; CHECK-NEXT:    [[TMP9:%.*]] = icmp sge i64 [[TMP8]], 5
2518557c26SJay Foad; CHECK-NEXT:    br label [[FLOW1]]
2618557c26SJay Foad; CHECK:       Flow1:
2740e9284fSRuiling Song; CHECK-NEXT:    [[TMP2]] = phi i64 [ [[TMP8]], [[BB7]] ], [ undef, [[FLOW]] ]
2840e9284fSRuiling Song; CHECK-NEXT:    [[TMP3:%.*]] = phi i32 [ 255, [[BB7]] ], [ [[TMP0]], [[FLOW]] ]
2940e9284fSRuiling Song; CHECK-NEXT:    [[TMP4:%.*]] = phi i1 [ [[TMP9]], [[BB7]] ], [ true, [[FLOW]] ]
3040e9284fSRuiling Song; CHECK-NEXT:    br i1 [[TMP4]], label [[BB10:%.*]], label [[BB3]]
3118557c26SJay Foad; CHECK:       bb10:
32*bf6f82a9SMatt Arsenault; CHECK-NEXT:    store i32 [[TMP3]], ptr addrspace(1) [[ARG:%.*]], align 4
3318557c26SJay Foad; CHECK-NEXT:    ret void
3418557c26SJay Foad;
35cee313d2SEric Christopherbb:
36cee313d2SEric Christopher  br label %bb3
37cee313d2SEric Christopher
38cee313d2SEric Christopherbb3:                                              ; preds = %bb7, %bb
39cee313d2SEric Christopher  %tmp = phi i64 [ 0, %bb ], [ %tmp8, %bb7 ]
40cee313d2SEric Christopher  %tmp4 = fcmp ult float %arg1, 3.500000e+00
41cee313d2SEric Christopher  br i1 %tmp4, label %bb7, label %bb5
42cee313d2SEric Christopher
43cee313d2SEric Christopherbb5:                                              ; preds = %bb3
44cee313d2SEric Christopher  %tmp6 = fcmp olt float 0.000000e+00, %arg2
45cee313d2SEric Christopher  br i1 %tmp6, label %bb10, label %bb7
46cee313d2SEric Christopher
47cee313d2SEric Christopher
48cee313d2SEric Christopherbb7:                                              ; preds = %bb5, %bb3
49cee313d2SEric Christopher  %tmp8 = add nuw nsw i64 %tmp, 1
50cee313d2SEric Christopher  %tmp9 = icmp slt i64 %tmp8, 5
51cee313d2SEric Christopher  br i1 %tmp9, label %bb3, label %bb10
52cee313d2SEric Christopher
53cee313d2SEric Christopher
54cee313d2SEric Christopherbb10:                                             ; preds = %bb7, %bb5
55cee313d2SEric Christopher  %tmp11 = phi i32 [ 15, %bb5 ], [ 255, %bb7 ]
56*bf6f82a9SMatt Arsenault  store i32 %tmp11, ptr addrspace(1) %arg, align 4
57cee313d2SEric Christopher  ret void
58cee313d2SEric Christopher}
59