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Imported Upstream version 5.18.0.234
Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f
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; RUN: opt < %s -callsite-splitting -S | FileCheck %s
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; RUN: opt < %s -passes='function(callsite-splitting)' -S | FileCheck %s
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; CHECK-LABEL: @test_simple
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; CHECK-LABEL: Header:
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; CHECK-NEXT: br i1 undef, label %Tail.predBB1.split
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; CHECK-LABEL: TBB:
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; CHECK: br i1 %cmp, label %Tail.predBB2.split
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; CHECK-LABEL: Tail.predBB1.split:
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; CHECK: %[[CALL1:.*]] = call i32 @callee(i32* %a, i32 %v, i32 %p)
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; CHECK-LABEL: Tail.predBB2.split:
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; CHECK: %[[CALL2:.*]] = call i32 @callee(i32* null, i32 %v, i32 %p)
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; CHECK-LABEL: Tail
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; CHECK: %[[MERGED:.*]] = phi i32 [ %[[CALL1]], %Tail.predBB1.split ], [ %[[CALL2]], %Tail.predBB2.split ]
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; CHECK: ret i32 %[[MERGED]]
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define i32 @test_simple(i32* %a, i32 %v, i32 %p) {
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Header:
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br i1 undef, label %Tail, label %End
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TBB:
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%cmp = icmp eq i32* %a, null
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br i1 %cmp, label %Tail, label %End
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Tail:
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%r = call i32 @callee(i32* %a, i32 %v, i32 %p)
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ret i32 %r
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End:
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ret i32 %v
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}
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; CHECK-LABEL: @test_eq_eq_eq_untaken
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; CHECK-LABEL: Header:
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; CHECK: br i1 %tobool1, label %TBB1, label %Tail.predBB1.split
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; CHECK-LABEL: TBB2:
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; CHECK: br i1 %cmp2, label %Tail.predBB2.split, label %End
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; CHECK-LABEL: Tail.predBB1.split:
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; CHECK: %[[CALL1:.*]] = call i32 @callee(i32* nonnull %a, i32 %v, i32 %p)
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; CHECK-LABEL: Tail.predBB2.split:
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; CHECK: %[[CALL2:.*]] = call i32 @callee(i32* null, i32 1, i32 99)
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; CHECK-LABEL: Tail
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; CHECK: %[[MERGED:.*]] = phi i32 [ %[[CALL1]], %Tail.predBB1.split ], [ %[[CALL2]], %Tail.predBB2.split ]
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; CHECK: ret i32 %[[MERGED]]
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define i32 @test_eq_eq_eq_untaken2(i32* %a, i32 %v, i32 %p) {
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Header:
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%tobool1 = icmp eq i32* %a, null
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br i1 %tobool1, label %TBB1, label %Tail
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TBB1:
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%cmp1 = icmp eq i32 %v, 1
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br i1 %cmp1, label %TBB2, label %End
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TBB2:
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%cmp2 = icmp eq i32 %p, 99
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br i1 %cmp2, label %Tail, label %End
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Tail:
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%r = call i32 @callee(i32* %a, i32 %v, i32 %p)
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ret i32 %r
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End:
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ret i32 %v
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}
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; CHECK-LABEL: @test_eq_ne_eq_untaken
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; CHECK-LABEL: Header:
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; CHECK: br i1 %tobool1, label %TBB1, label %Tail.predBB1.split
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; CHECK-LABEL: TBB2:
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; CHECK: br i1 %cmp2, label %Tail.predBB2.split, label %End
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; CHECK-LABEL: Tail.predBB1.split:
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; CHECK: %[[CALL1:.*]] = call i32 @callee(i32* nonnull %a, i32 %v, i32 %p)
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; CHECK-LABEL: Tail.predBB2.split:
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; CHECK: %[[CALL2:.*]] = call i32 @callee(i32* null, i32 %v, i32 99)
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; CHECK-LABEL: Tail
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; CHECK: %[[MERGED:.*]] = phi i32 [ %[[CALL1]], %Tail.predBB1.split ], [ %[[CALL2]], %Tail.predBB2.split ]
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; CHECK: ret i32 %[[MERGED]]
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define i32 @test_eq_ne_eq_untaken(i32* %a, i32 %v, i32 %p) {
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Header:
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%tobool1 = icmp eq i32* %a, null
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br i1 %tobool1, label %TBB1, label %Tail
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TBB1:
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%cmp1 = icmp ne i32 %v, 1
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br i1 %cmp1, label %TBB2, label %End
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TBB2:
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%cmp2 = icmp eq i32 %p, 99
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br i1 %cmp2, label %Tail, label %End
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Tail:
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%r = call i32 @callee(i32* %a, i32 %v, i32 %p)
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ret i32 %r
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End:
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ret i32 %v
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}
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; CHECK-LABEL: @test_header_header2_tbb
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; CHECK: Header2:
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; CHECK:br i1 %tobool2, label %Tail.predBB1.split, label %TBB1
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; CHECK-LABEL: TBB2:
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; CHECK: br i1 %cmp2, label %Tail.predBB2.split, label %End
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; CHECK-LABEL: Tail.predBB1.split:
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; CHECK: %[[CALL1:.*]] = call i32 @callee(i32* nonnull %a, i32 %v, i32 10)
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; CHECK-LABEL: Tail.predBB2.split:
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; NOTE: CallSiteSplitting cannot infer that %a is null here, as it currently
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; only supports recording conditions along a single predecessor path.
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; CHECK: %[[CALL2:.*]] = call i32 @callee(i32* %a, i32 1, i32 99)
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; CHECK-LABEL: Tail
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; CHECK: %[[MERGED:.*]] = phi i32 [ %[[CALL1]], %Tail.predBB1.split ], [ %[[CALL2]], %Tail.predBB2.split ]
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; CHECK: ret i32 %[[MERGED]]
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define i32 @test_header_header2_tbb(i32* %a, i32 %v, i32 %p) {
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Header:
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%tobool1 = icmp eq i32* %a, null
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br i1 %tobool1, label %TBB1, label %Header2
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Header2:
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%tobool2 = icmp eq i32 %p, 10
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br i1 %tobool2, label %Tail, label %TBB1
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TBB1:
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%cmp1 = icmp eq i32 %v, 1
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br i1 %cmp1, label %TBB2, label %End
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TBB2:
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%cmp2 = icmp eq i32 %p, 99
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br i1 %cmp2, label %Tail, label %End
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Tail:
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%r = call i32 @callee(i32* %a, i32 %v, i32 %p)
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ret i32 %r
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End:
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ret i32 %v
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}
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define i32 @callee(i32* %a, i32 %v, i32 %p) {
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ret i32 10
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}
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