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7dcd99ba17
Summary: This patch improves Inliner to provide causes/reasons for negative inline decisions. 1. It adds one new message field to InlineCost to report causes for Always and Never instances. All Never and Always instantiations must provide a simple message. 2. Several functions that used to return the inlining results as boolean are changed to return InlineResult which carries the cause for negative decision. 3. Changed remark priniting and debug output messages to provide the additional messages and related inline cost. 4. Adjusted tests for changed printing. Patch by: yrouban (Yevgeny Rouban) Reviewers: craig.topper, sammccall, sgraenitz, NutshellySima, shchenz, chandlerc, apilipenko, javed.absar, tejohnson, dblaikie, sanjoy, eraman, xbolva00 Reviewed By: tejohnson, xbolva00 Subscribers: xbolva00, llvm-commits, arsenm, mehdi_amini, eraman, haicheng, steven_wu, dexonsmith Differential Revision: https://reviews.llvm.org/D49412 llvm-svn: 338969
41 lines
1.2 KiB
LLVM
41 lines
1.2 KiB
LLVM
; RUN: opt < %s -inline -pass-remarks=inline -pass-remarks-missed=inline \
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; RUN: -pass-remarks-analysis=inline -pass-remarks-with-hotness -S 2>&1 \
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; RUN: | FileCheck %s
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; RUN: opt < %s -passes=inline -pass-remarks=inline -pass-remarks-missed=inline \
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; RUN: -pass-remarks-analysis=inline -pass-remarks-with-hotness -S 2>&1 \
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; RUN: | FileCheck %s
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; CHECK: foo inlined into bar with (cost=always): always inline attribute (hotness: 30)
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; CHECK: foz not inlined into bar because it should never be inlined (cost=never): noinline function attribute (hotness: 30)
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; Function Attrs: alwaysinline nounwind uwtable
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define i32 @foo() #0 !prof !1 {
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entry:
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ret i32 4
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}
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; Function Attrs: noinline nounwind uwtable
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define i32 @foz() #1 !prof !2 {
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entry:
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ret i32 2
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}
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; Function Attrs: nounwind uwtable
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define i32 @bar() !prof !3 {
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entry:
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%call = call i32 @foo()
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%call2 = call i32 @foz()
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%mul = mul i32 %call, %call2
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ret i32 %mul
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}
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attributes #0 = { alwaysinline }
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attributes #1 = { noinline }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.5.0 "}
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!1 = !{!"function_entry_count", i64 10}
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!2 = !{!"function_entry_count", i64 20}
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!3 = !{!"function_entry_count", i64 30}
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