diff options
Diffstat (limited to 'llvm/test/Transforms/CodeExtractor/PartialInlineHighCost.ll')
| -rw-r--r-- | llvm/test/Transforms/CodeExtractor/PartialInlineHighCost.ll | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/llvm/test/Transforms/CodeExtractor/PartialInlineHighCost.ll b/llvm/test/Transforms/CodeExtractor/PartialInlineHighCost.ll new file mode 100644 index 00000000000..e43a94dc6c3 --- /dev/null +++ b/llvm/test/Transforms/CodeExtractor/PartialInlineHighCost.ll @@ -0,0 +1,107 @@ +; The outlined region has high frequency and the outlining +; call sequence is expensive (input, output, multiple exit etc) +; RUN: opt < %s -partial-inliner -max-num-inline-blocks=2 -S | FileCheck %s +; RUN: opt < %s -passes=partial-inliner -max-num-inline-blocks=2 -S | FileCheck %s +; RUN: opt < %s -partial-inliner -skip-partial-inlining-cost-analysis -max-num-inline-blocks=2 -S | FileCheck --check-prefix=NOCOST %s +; RUN: opt < %s -passes=partial-inliner -skip-partial-inlining-cost-analysis -max-num-inline-blocks=2 -S | FileCheck --check-prefix=NOCOST %s + + +; Function Attrs: nounwind +define i32 @bar_hot_outline_region(i32 %arg) local_unnamed_addr #0 { +bb: + %tmp = icmp slt i32 %arg, 0 + br i1 %tmp, label %bb1, label %bb16, !prof !1 + +bb1: ; preds = %bb + %tmp2 = tail call i32 (...) @foo() #0 + %tmp3 = tail call i32 (...) @foo() #0 + %tmp4 = tail call i32 (...) @foo() #0 + %tmp5 = tail call i32 (...) @foo() #0 + %tmp6 = tail call i32 (...) @foo() #0 + %tmp7 = tail call i32 (...) @foo() #0 + %tmp8 = add nsw i32 %arg, 1 + %tmp9 = tail call i32 @goo(i32 %tmp8) #0 + %tmp10 = tail call i32 (...) @foo() #0 + %tmp11 = icmp eq i32 %tmp10, 0 + br i1 %tmp11, label %bb12, label %bb16 + +bb12: ; preds = %bb1 + %tmp13 = tail call i32 (...) @foo() #0 + %tmp14 = icmp eq i32 %tmp13, 0 + %tmp15 = select i1 %tmp14, i32 0, i32 3 + br label %bb16 + +bb16: ; preds = %bb12, %bb1, %bb + %tmp17 = phi i32 [ 2, %bb1 ], [ %tmp15, %bb12 ], [ 0, %bb ] + ret i32 %tmp17 +} + +define i32 @bar_cold_outline_region(i32 %arg) local_unnamed_addr #0 { +bb: + %tmp = icmp slt i32 %arg, 0 + br i1 %tmp, label %bb1, label %bb16, !prof !2 + +bb1: ; preds = %bb + %tmp2 = tail call i32 (...) @foo() #0 + %tmp3 = tail call i32 (...) @foo() #0 + %tmp4 = tail call i32 (...) @foo() #0 + %tmp5 = tail call i32 (...) @foo() #0 + %tmp6 = tail call i32 (...) @foo() #0 + %tmp7 = tail call i32 (...) @foo() #0 + %tmp8 = add nsw i32 %arg, 1 + %tmp9 = tail call i32 @goo(i32 %tmp8) #0 + %tmp10 = tail call i32 (...) @foo() #0 + %tmp11 = icmp eq i32 %tmp10, 0 + br i1 %tmp11, label %bb12, label %bb16 + +bb12: ; preds = %bb1 + %tmp13 = tail call i32 (...) @foo() #0 + %tmp14 = icmp eq i32 %tmp13, 0 + %tmp15 = select i1 %tmp14, i32 0, i32 3 + br label %bb16 + +bb16: ; preds = %bb12, %bb1, %bb + %tmp17 = phi i32 [ 2, %bb1 ], [ %tmp15, %bb12 ], [ 0, %bb ] + ret i32 %tmp17 +} + +; Function Attrs: nounwind +declare i32 @foo(...) local_unnamed_addr #0 + +; Function Attrs: nounwind +declare i32 @goo(i32) local_unnamed_addr #0 + +; Function Attrs: nounwind +define i32 @dummy_caller(i32 %arg) local_unnamed_addr #0 { +bb: +; CHECK-LABEL: @dummy_caller +; CHECK-NOT: br i1 +; CHECK-NOT: call{{.*}}bar_hot_outline_region. +; NOCOST-LABEL: @dummy_caller +; NOCOST: br i1 +; NOCOST: call{{.*}}bar_hot_outline_region. + + %tmp = tail call i32 @bar_hot_outline_region(i32 %arg) + ret i32 %tmp +} + +define i32 @dummy_caller2(i32 %arg) local_unnamed_addr #0 { +bb: +; CHECK-LABEL: @dummy_caller2 +; CHECK: br i1 +; CHECK: call{{.*}}bar_cold_outline_region. +; NOCOST-LABEL: @dummy_caller2 +; NOCOST: br i1 +; NOCOST: call{{.*}}bar_cold_outline_region. + + %tmp = tail call i32 @bar_cold_outline_region(i32 %arg) + ret i32 %tmp +} + +attributes #0 = { nounwind } + +!llvm.ident = !{!0} + +!0 = !{!"clang version 5.0.0 (trunk 301898)"} +!1 = !{!"branch_weights", i32 2000, i32 1} +!2 = !{!"branch_weights", i32 1, i32 100} |
