1 ; RUN: opt < %s -lcssa -S | FileCheck %s
2 ; RUN: opt < %s -passes=lcssa -S | FileCheck %s
3 ; RUN: opt < %s -debugify -lcssa -S | FileCheck -check-prefix=DEBUGIFY %s
5 define void @lcssa(i1 %S2) {
8 br label %loop.interior
9 loop.interior: ; preds = %post.if, %entry
10 br i1 %S2, label %if.true, label %if.false
11 if.true: ; preds = %loop.interior
12 %X1 = add i32 0, 0 ; <i32> [#uses=1]
14 if.false: ; preds = %loop.interior
15 %X2 = add i32 0, 1 ; <i32> [#uses=1]
17 post.if: ; preds = %if.false, %if.true
18 %X3 = phi i32 [ %X1, %if.true ], [ %X2, %if.false ] ; <i32> [#uses=1]
19 br i1 %S2, label %loop.exit, label %loop.interior
20 loop.exit: ; preds = %post.if
21 ; CHECK: %X3.lcssa = phi i32
22 ; DEBUGIFY: %X3.lcssa = phi i32 {{.*}}, !dbg ![[DbgLoc:[0-9]+]]
23 ; DEBUGIFY-NEXT: call void @llvm.dbg.value(metadata i32 %X3.lcssa
24 ; CHECK: %X4 = add i32 3, %X3.lcssa
25 %X4 = add i32 3, %X3 ; <i32> [#uses=0]
29 ; Make sure the lcssa phi has %X3's debug location
30 ; DEBUGIFY: ![[DbgLoc]] = !DILocation(line: 7