2019-01-29 07:43:26 +08:00
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; RUN: opt -module-summary %s -o %t1.bc -module-summary-dot-file=%t1.dot
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; RUN: opt -module-summary %p/Inputs/dot-dumper.ll -o %t2.bc -module-summary-dot-file=%t2.dot
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2018-01-22 21:35:40 +08:00
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; RUN: llvm-lto2 run -save-temps %t1.bc %t2.bc -o %t3 \
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; RUN: -r=%t1.bc,main,px \
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; RUN: -r=%t1.bc,main_alias,p \
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; RUN: -r=%t1.bc,foo, \
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; RUN: -r=%t1.bc,A, \
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; RUN: -r=%t2.bc,foo,p \
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; RUN: -r=%t2.bc,bar,p \
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; RUN: -r=%t2.bc,A,p \
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; RUN: -r=%t2.bc,B,p
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2019-02-26 15:38:21 +08:00
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; RUN: cat %t1.dot | FileCheck --check-prefix=PERMODULE %s
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; RUN: cat %t3.index.dot | FileCheck --check-prefix=COMBINED %s
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2018-01-22 21:35:40 +08:00
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2019-02-26 15:38:21 +08:00
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; PERMODULE: digraph Summary {
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; PERMODULE-NEXT: // Module:
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; PERMODULE-NEXT: subgraph cluster_0 {
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; PERMODULE-NEXT: style = filled;
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; PERMODULE-NEXT: color = lightgrey;
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; PERMODULE-NEXT: label = "";
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; PERMODULE-NEXT: node [style=filled,fillcolor=lightblue];
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; PERMODULE-NEXT: M0_[[MAIN_ALIAS:[0-9]+]] [style="dotted,filled",shape="box",label="main_alias",fillcolor="red"]; // alias, dead
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2019-11-09 07:50:55 +08:00
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; PERMODULE-NEXT: M0_[[MAIN:[0-9]+]] [shape="record",label="main|extern (inst: 4, ffl: 000000)}",fillcolor="red"]; // function, dead
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2019-02-26 15:38:21 +08:00
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; PERMODULE-NEXT: // Edges:
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[ThinLTO] Restructure AliasSummary to contain ValueInfo of Aliasee
Summary:
The AliasSummary previously contained the AliaseeGUID, which was only
populated when reading the summary from bitcode. This patch changes it
to instead hold the ValueInfo of the aliasee, and always populates it.
This enables more efficient access to the ValueInfo (specifically in the
recent patch r352438 which needed to perform an index hash table lookup
using the aliasee GUID).
As noted in the comments in AliasSummary, we no longer technically need
to keep a pointer to the corresponding aliasee summary, since it could
be obtained by walking the list of summaries on the ValueInfo looking
for the summary in the same module. However, I am concerned that this
would be inefficient when walking through the index during the thin
link for various analyses. That can be reevaluated in the future.
By always populating this new field, we can remove the guard and special
handling for a 0 aliasee GUID when dumping the dot graph of the summary.
An additional improvement in this patch is when reading the summaries
from LLVM assembly we now set the AliaseeSummary field to the aliasee
summary in that same module, which makes it consistent with the behavior
when reading the summary from bitcode.
Reviewers: pcc, mehdi_amini
Subscribers: inglorion, eraman, steven_wu, dexonsmith, arphaman, llvm-commits
Differential Revision: https://reviews.llvm.org/D57470
llvm-svn: 356268
2019-03-15 23:11:38 +08:00
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; PERMODULE-NEXT: M0_[[MAIN_ALIAS]] -> M0_[[MAIN]] [style=dotted]; // alias
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2019-02-26 15:38:21 +08:00
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; PERMODULE-NEXT: }
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; PERMODULE-NEXT: // Cross-module edges:
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; PERMODULE-NEXT: [[A:[0-9]+]] [label="A"]; // defined externally
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; PERMODULE-NEXT: M0_[[MAIN]] -> [[A]] [style=dashed,color=forestgreen]; // const-ref
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; PERMODULE-NEXT: [[FOO:[0-9]+]] [label="foo"]; // defined externally
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; PERMODULE-NEXT: M0_[[MAIN]] -> [[FOO]] // call (hotness : Unknown)
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; PERMODULE-NEXT: }
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2019-01-29 07:43:26 +08:00
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2019-02-26 15:38:21 +08:00
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; COMBINED: digraph Summary {
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; COMBINED-NEXT: // Module: {{.*}}dot-dumper{{.*}}1.bc
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; COMBINED-NEXT: subgraph cluster_0 {
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; COMBINED-NEXT: style = filled;
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; COMBINED-NEXT: color = lightgrey;
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; COMBINED-NEXT: label = "dot-dumper{{.*}}1.bc";
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; COMBINED-NEXT: node [style=filled,fillcolor=lightblue];
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; COMBINED-NEXT: M0_[[MAIN_ALIAS:[0-9]+]] [style="dotted,filled",shape="box",label="main_alias",fillcolor="red"]; // alias, dead
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2019-12-18 23:33:15 +08:00
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; COMBINED-NEXT: M0_[[MAIN:[0-9]+]] [shape="record",label="main|extern (inst: 4, ffl: 000000)}"]; // function, preserved
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2019-02-26 15:38:21 +08:00
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; COMBINED-NEXT: // Edges:
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; COMBINED-NEXT: M0_[[MAIN_ALIAS]] -> M0_[[MAIN]] [style=dotted]; // alias
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; COMBINED-NEXT: }
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; COMBINED-NEXT: // Module: {{.*}}dot-dumper{{.*}}2.bc
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; COMBINED-NEXT: subgraph cluster_1 {
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; COMBINED-NEXT: style = filled;
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; COMBINED-NEXT: color = lightgrey;
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; COMBINED-NEXT: label = "dot-dumper{{.*}}2.bc";
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; COMBINED-NEXT: node [style=filled,fillcolor=lightblue];
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2019-11-09 07:50:55 +08:00
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; COMBINED-NEXT: M1_[[FOO:[0-9]+]] [shape="record",label="foo|extern (inst: 4, ffl: 000010)}"]; // function
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2019-02-26 15:38:21 +08:00
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; COMBINED-NEXT: M1_[[A:[0-9]+]] [shape="Mrecord",label="A|extern}"]; // variable, immutable
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2020-01-16 00:29:01 +08:00
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; COMBINED-NEXT: M1_[[B:[0-9]+]] [shape="Mrecord",label="B|extern}"]; // variable, immutable, constant
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2019-11-09 07:50:55 +08:00
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; COMBINED-NEXT: M1_{{[0-9]+}} [shape="record",label="bar|extern (inst: 1, ffl: 000000)}",fillcolor="red"]; // function, dead
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2019-02-26 15:38:21 +08:00
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; COMBINED-NEXT: // Edges:
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; COMBINED-NEXT: M1_[[FOO]] -> M1_[[B]] [style=dashed,color=forestgreen]; // const-ref
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; COMBINED-NEXT: M1_[[FOO]] -> M1_[[A]] [style=dashed,color=forestgreen]; // const-ref
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; COMBINED-NEXT: }
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; COMBINED-NEXT: // Cross-module edges:
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; COMBINED-NEXT: M0_[[MAIN]] -> M1_[[A]] [style=dashed,color=forestgreen]; // const-ref
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; COMBINED-NEXT: M0_[[MAIN]] -> M1_[[FOO]] // call (hotness : Unknown)
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; COMBINED-NEXT: }
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2018-01-22 21:35:40 +08:00
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2019-09-11 07:15:38 +08:00
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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2018-01-22 21:35:40 +08:00
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target triple = "x86_64-unknown-linux-gnu"
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@A = external local_unnamed_addr global i32, align 4
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; Function Attrs: nounwind uwtable
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define i32 @main() local_unnamed_addr {
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%1 = tail call i32 (...) @foo()
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%2 = load i32, i32* @A, align 4
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%3 = add nsw i32 %2, %1
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ret i32 %3
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}
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@main_alias = weak_odr alias i32 (), i32 ()* @main
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declare i32 @foo(...) local_unnamed_addr
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