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1;; Verify that @LPStart is omitted when there are no landing pads. This test2;; uses an unkown personality to force emitting the exception table.3 4; RUN: llc -basic-block-sections=all -mtriple=x86_64 < %s | FileCheck %s5 6declare void @throwit()7declare i32 @__unknown_ehpersonality(...)8 9define void @foo(i1 %cond) uwtable personality ptr @__unknown_ehpersonality {10entry:11 br i1 %cond, label %cond.true, label %cond.false12 13cond.true: ; preds = %entry14 call void @throwit()15 unreachable16 17cond.false: ; preds = %entry18 ret void19}20 21; CHECK: GCC_except_table0:22; CHECK-NEXT: .Lexception0:23; CHECK-NEXT: .byte 255 # @LPStart Encoding = omit24; CHECK-NEXT: .byte 255 # @TType Encoding = omit25; CHECK-NEXT: .byte 1 # Call site Encoding = uleb12826; CHECK-NEXT: .uleb128 .Laction_table_base0-.Lcst_begin027; CHECK-NEXT: .Lcst_begin0:28; CHECK-NEXT: .Lexception1:29; CHECK-NEXT: .byte 255 # @LPStart Encoding = omit30; CHECK-NEXT: .byte 255 # @TType Encoding = omit31; CHECK-NEXT: .byte 1 # Call site Encoding = uleb12832; CHECK-NEXT: .uleb128 .Laction_table_base0-.Lcst_begin133; CHECK-NEXT: .Lcst_begin1:34; CHECK-NEXT: .Lexception2:35; CHECK-NEXT: .byte 255 # @LPStart Encoding = omit36; CHECK-NEXT: .byte 255 # @TType Encoding = omit37; CHECK-NEXT: .byte 1 # Call site Encoding = uleb12838; CHECK-NEXT: .uleb128 .Laction_table_base0-.Lcst_begin239; CHECK-NEXT: .Lcst_begin2:40; CHECK-NEXT: .uleb128 foo.__part.2-foo.__part.2 # >> Call Site 1 <<41; CHECK-NEXT: .uleb128 .LBB_END0_2-foo.__part.2 # Call between foo.__part.2 and .LBB_END0_242; CHECK-NEXT: .byte 0 # has no landing pad43; CHECK-NEXT: .byte 0 # On action: cleanup44; CHECK-NEXT: .Laction_table_base0:45