live_shrink_unsafe.ll
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; The expected behavior of this file is expected to change when partial
; inlining legality check is enhanced.
; RUN: opt -S -partial-inliner -skip-partial-inlining-cost-analysis < %s | FileCheck %s
; RUN: opt -S -passes=partial-inliner -skip-partial-inlining-cost-analysis < %s | FileCheck %s
%class.A = type { i32 }
@cond = local_unnamed_addr global i32 0, align 4
@condptr = external local_unnamed_addr global i32*, align 8
; Function Attrs: uwtable
define void @_Z3foo_unknown_mem_accessv() local_unnamed_addr {
bb:
%tmp = alloca %class.A, align 4
%tmp1 = alloca %class.A, align 4
%tmp2 = bitcast %class.A* %tmp to i8*
call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %tmp2)
%tmp3 = bitcast %class.A* %tmp1 to i8*
call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %tmp3)
%tmp4 = load i32*, i32** @condptr, align 8, !tbaa !2
%tmp5 = load i32, i32* %tmp4, align 4, !tbaa !6
%tmp6 = icmp eq i32 %tmp5, 0
br i1 %tmp6, label %bb7, label %bb8
bb7: ; preds = %bb
call void @_ZN1A7memfuncEv(%class.A* nonnull %tmp)
br label %bb8
bb8: ; preds = %bb7, %bb
call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %tmp3)
call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %tmp2)
ret void
}
declare void @_Z3barv() local_unnamed_addr
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @_ZN1A7memfuncEv(%class.A*) local_unnamed_addr
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
define void @_Z3foo_unknown_calli(i32 %arg) local_unnamed_addr {
bb:
%tmp = alloca %class.A, align 4
%tmp1 = bitcast %class.A* %tmp to i8*
call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %tmp1)
tail call void @_Z3barv()
%tmp2 = icmp eq i32 %arg, 0
br i1 %tmp2, label %bb3, label %bb4
bb3: ; preds = %bb
call void @_ZN1A7memfuncEv(%class.A* nonnull %tmp)
br label %bb4
bb4: ; preds = %bb3, %bb
call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %tmp1)
ret void
}
define void @_Z3goov() local_unnamed_addr {
; CHECK-LABEL: @_Z3goov
; CHECK-NEXT: bb:
; CHECK: alloca
; CHECK: lifetime
bb:
call void @_Z3foo_unknown_mem_accessv()
%tmp = load i32, i32* @cond, align 4, !tbaa !2
tail call void @_Z3foo_unknown_calli(i32 %tmp)
ret void
}
; CHECK-LABEL: define internal void @_Z3foo_unknown_calli.1.bb3
; CHECK: newFuncRoot:
; CHECK-NEXT: br label %bb3
; CHECK: bb4.exitStub:
; CHECK-NEXT: ret void
; CHECK: bb3:
; CHECK-NOT: lifetime.ed
; CHECK: br label %bb4.exitStub
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 5.0.0 (trunk 304489)"}
!2 = !{!3, !3, i64 0}
!3 = !{!"any pointer", !4, i64 0}
!4 = !{!"omnipotent char", !5, i64 0}
!5 = !{!"Simple C++ TBAA"}
!6 = !{!7, !7, i64 0}
!7 = !{!"int", !4, i64 0}