c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
92 lines
2.7 KiB
LLVM
92 lines
2.7 KiB
LLVM
; The expected behavior of this file is expected to change when partial
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; inlining legality check is enhanced.
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; RUN: opt -S -passes=partial-inliner -skip-partial-inlining-cost-analysis < %s | FileCheck %s
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; RUN: opt -S -passes=partial-inliner -skip-partial-inlining-cost-analysis < %s | FileCheck %s
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%class.A = type { i32 }
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@cond = local_unnamed_addr global i32 0, align 4
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@condptr = external local_unnamed_addr global ptr, align 8
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; Function Attrs: uwtable
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define void @_Z3foo_unknown_mem_accessv() local_unnamed_addr {
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bb:
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%tmp = alloca %class.A, align 4
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%tmp1 = alloca %class.A, align 4
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call void @llvm.lifetime.start.p0(ptr nonnull %tmp)
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call void @llvm.lifetime.start.p0(ptr nonnull %tmp1)
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%tmp4 = load ptr, ptr @condptr, align 8, !tbaa !2
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%tmp5 = load i32, ptr %tmp4, align 4, !tbaa !6
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%tmp6 = icmp eq i32 %tmp5, 0
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br i1 %tmp6, label %bb7, label %bb8
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bb7: ; preds = %bb
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call void @_ZN1A7memfuncEv(ptr nonnull %tmp)
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br label %bb8
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bb8: ; preds = %bb7, %bb
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call void @llvm.lifetime.end.p0(ptr nonnull %tmp1)
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call void @llvm.lifetime.end.p0(ptr nonnull %tmp)
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ret void
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}
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declare void @_Z3barv() local_unnamed_addr
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declare void @llvm.lifetime.start.p0(ptr nocapture)
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declare void @_ZN1A7memfuncEv(ptr) local_unnamed_addr
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declare void @llvm.lifetime.end.p0(ptr nocapture)
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define void @_Z3foo_unknown_calli(i32 %arg) local_unnamed_addr {
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bb:
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%tmp = alloca %class.A, align 4
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call void @llvm.lifetime.start.p0(ptr nonnull %tmp)
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tail call void @_Z3barv()
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%tmp2 = icmp eq i32 %arg, 0
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br i1 %tmp2, label %bb3, label %bb4
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bb3: ; preds = %bb
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call void @_ZN1A7memfuncEv(ptr nonnull %tmp)
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br label %bb4
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bb4: ; preds = %bb3, %bb
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call void @llvm.lifetime.end.p0(ptr nonnull %tmp)
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ret void
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}
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define void @_Z3goov() local_unnamed_addr {
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; CHECK-LABEL: @_Z3goov
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; CHECK-NEXT: bb:
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; CHECK: alloca
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; CHECK: lifetime
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bb:
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call void @_Z3foo_unknown_mem_accessv()
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%tmp = load i32, ptr @cond, align 4, !tbaa !2
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tail call void @_Z3foo_unknown_calli(i32 %tmp)
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ret void
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}
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; CHECK-LABEL: define internal void @_Z3foo_unknown_calli.1.bb3
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; CHECK: newFuncRoot:
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; CHECK-NEXT: br label %bb3
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; CHECK: bb3:
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; CHECK-NOT: lifetime.ed
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; CHECK: br label %bb4.exitStub
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; CHECK: bb4.exitStub:
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; CHECK-NEXT: ret void
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{!"clang version 5.0.0 (trunk 304489)"}
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!2 = !{!3, !3, i64 0}
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!3 = !{!"any pointer", !4, i64 0}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C++ TBAA"}
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!6 = !{!7, !7, i64 0}
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!7 = !{!"int", !4, i64 0}
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