1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals --version 2
2 ; RUN: opt < %s -passes='simplifycfg<sink-common-insts;no-hoist-common-insts>' -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s --check-prefix=SINK
5 ; Test case based on the following C++ code with manualy annotated !prof metadata.
6 ; This is to test that when calls to 'func1' from 'if.then' and 'if.else' are
7 ; sinked, the branch weights are merged and attached to sinked call.
9 ; int func1(int a, int b) ;
10 ; int func2(int a, int b) ;
12 ; int func(int a, int b, bool c) {
23 define i32 @_Z4funciib(i32 %a, i32 %b, i1 %c) {
24 ; SINK-LABEL: define i32 @_Z4funciib
25 ; SINK-SAME: (i32 [[A:%.*]], i32 [[B:%.*]], i1 [[C:%.*]]) {
27 ; SINK-NEXT: br i1 [[C]], label [[IF_END:%.*]], label [[IF_ELSE:%.*]]
29 ; SINK-NEXT: [[CALL1:%.*]] = tail call i32 @_Z5func2ii(i32 [[A]], i32 [[B]])
30 ; SINK-NEXT: [[SUB:%.*]] = sub i32 [[B]], [[CALL1]]
31 ; SINK-NEXT: br label [[IF_END]]
33 ; SINK-NEXT: [[SUB_SINK:%.*]] = phi i32 [ [[SUB]], [[IF_ELSE]] ], [ [[B]], [[ENTRY:%.*]] ]
34 ; SINK-NEXT: [[CALL2:%.*]] = tail call i32 @_Z5func1ii(i32 [[A]], i32 [[SUB_SINK]]), !prof [[PROF0:![0-9]+]]
35 ; SINK-NEXT: ret i32 [[CALL2]]
38 br i1 %c, label %if.then, label %if.else
40 if.then: ; preds = %entry
41 %call = tail call i32 @_Z5func1ii(i32 %a, i32 %b), !prof !0
44 if.else: ; preds = %entry
45 %call1 = tail call i32 @_Z5func2ii(i32 %a, i32 %b)
46 %sub = sub i32 %b, %call1
47 %call2 = tail call i32 @_Z5func1ii(i32 %a, i32 %sub), !prof !1
50 if.end: ; preds = %if.else, %if.then
51 %sum.0 = phi i32 [ %call, %if.then ], [ %call2, %if.else ]
55 declare i32 @_Z5func1ii(i32, i32)
57 declare i32 @_Z5func2ii(i32, i32)
59 !0 = !{!"branch_weights", i32 10}
60 !1 = !{!"branch_weights", i32 90}
62 ; SINK: [[PROF0]] = !{!"branch_weights", i64 100}