derek.holloway
7502bf64a4
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106 lines
3.3 KiB
LLVM
106 lines
3.3 KiB
LLVM
; The outlined region has high frequency and the outlining
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; call sequence is expensive (input, output, multiple exit etc)
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; RUN: opt < %s -passes=partial-inliner -max-num-inline-blocks=2 -S | FileCheck %s
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; RUN: opt < %s -passes=partial-inliner -skip-partial-inlining-cost-analysis -max-num-inline-blocks=2 -S | FileCheck --check-prefix=NOCOST %s
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; Function Attrs: nounwind
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define i32 @bar_hot_outline_region(i32 %arg) local_unnamed_addr #0 {
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bb:
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%tmp = icmp slt i32 %arg, 0
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br i1 %tmp, label %bb1, label %bb16, !prof !1
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bb1: ; preds = %bb
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%tmp2 = tail call i32 (...) @foo() #0
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%tmp3 = tail call i32 (...) @foo() #0
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%tmp4 = tail call i32 (...) @foo() #0
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%tmp5 = tail call i32 (...) @foo() #0
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%tmp6 = tail call i32 (...) @foo() #0
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%tmp7 = tail call i32 (...) @foo() #0
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%tmp8 = add nsw i32 %arg, 1
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%tmp9 = tail call i32 @goo(i32 %tmp8) #0
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%tmp10 = tail call i32 (...) @foo() #0
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%tmp11 = icmp eq i32 %tmp10, 0
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br i1 %tmp11, label %bb12, label %bb16
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bb12: ; preds = %bb1
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%tmp13 = tail call i32 (...) @foo() #0
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%tmp14 = icmp eq i32 %tmp13, 0
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%tmp15 = select i1 %tmp14, i32 0, i32 3
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br label %bb16
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bb16: ; preds = %bb12, %bb1, %bb
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%tmp17 = phi i32 [ 2, %bb1 ], [ %tmp15, %bb12 ], [ 0, %bb ]
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ret i32 %tmp17
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}
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define i32 @bar_cold_outline_region(i32 %arg) local_unnamed_addr #0 {
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bb:
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%tmp = icmp slt i32 %arg, 0
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br i1 %tmp, label %bb1, label %bb16, !prof !2
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bb1: ; preds = %bb
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%tmp2 = tail call i32 (...) @foo() #0
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%tmp3 = tail call i32 (...) @foo() #0
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%tmp4 = tail call i32 (...) @foo() #0
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%tmp5 = tail call i32 (...) @foo() #0
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%tmp6 = tail call i32 (...) @foo() #0
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%tmp7 = tail call i32 (...) @foo() #0
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%tmp8 = add nsw i32 %arg, 1
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%tmp9 = tail call i32 @goo(i32 %tmp8) #0
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%tmp10 = tail call i32 (...) @foo() #0
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%tmp11 = icmp eq i32 %tmp10, 0
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br i1 %tmp11, label %bb12, label %bb16
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bb12: ; preds = %bb1
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%tmp13 = tail call i32 (...) @foo() #0
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%tmp14 = icmp eq i32 %tmp13, 0
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%tmp15 = select i1 %tmp14, i32 0, i32 3
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br label %bb16
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bb16: ; preds = %bb12, %bb1, %bb
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%tmp17 = phi i32 [ 2, %bb1 ], [ %tmp15, %bb12 ], [ 0, %bb ]
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ret i32 %tmp17
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}
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; Function Attrs: nounwind
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declare i32 @foo(...) local_unnamed_addr #0
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; Function Attrs: nounwind
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declare i32 @goo(i32) local_unnamed_addr #0
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; Function Attrs: nounwind
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define i32 @dummy_caller(i32 %arg) local_unnamed_addr #0 {
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bb:
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; CHECK-LABEL: @dummy_caller
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; CHECK-NOT: br i1
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; CHECK-NOT: call{{.*}}bar_hot_outline_region.
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; NOCOST-LABEL: @dummy_caller
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; NOCOST: br i1
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; NOCOST: call{{.*}}bar_hot_outline_region.
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%tmp = tail call i32 @bar_hot_outline_region(i32 %arg)
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ret i32 %tmp
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}
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define i32 @dummy_caller2(i32 %arg) local_unnamed_addr #0 {
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bb:
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; CHECK-LABEL: @dummy_caller2
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; CHECK: br i1
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; CHECK: call{{.*}}bar_cold_outline_region.
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; NOCOST-LABEL: @dummy_caller2
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; NOCOST: br i1
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; NOCOST: call{{.*}}bar_cold_outline_region.
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%tmp = tail call i32 @bar_cold_outline_region(i32 %arg)
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ret i32 %tmp
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}
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attributes #0 = { nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 5.0.0 (trunk 301898)"}
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!1 = !{!"branch_weights", i32 2000, i32 1}
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!2 = !{!"branch_weights", i32 1, i32 100}
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