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 4 5 define void @lcssa(i1 %S2) { 6 ; CHECK-LABEL: @lcssa 7 entry: 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] 13 br label %post.if 14 if.false: ; preds = %loop.interior 15 %X2 = add i32 0, 1 ; <i32> [#uses=1] 16 br label %post.if 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] 26 ret void 27 } 28 29 ; Make sure the lcssa phi has %X3's debug location 30 ; DEBUGIFY: ![[DbgLoc]] = !DILocation(line: 7 31
