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eb9d6d122a
This patch imports constant variables even when they can't be internalized (which results in promotion). This offers some extra constant folding opportunities. Differential revision: https://reviews.llvm.org/D70404
80 lines
3.8 KiB
LLVM
80 lines
3.8 KiB
LLVM
; 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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; 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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; 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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; 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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; PERMODULE-NEXT: M0_[[MAIN:[0-9]+]] [shape="record",label="main|extern (inst: 4, ffl: 000000)}",fillcolor="red"]; // function, dead
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; PERMODULE-NEXT: // Edges:
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; PERMODULE-NEXT: M0_[[MAIN_ALIAS]] -> M0_[[MAIN]] [style=dotted]; // alias
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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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; 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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; COMBINED-NEXT: M0_[[MAIN:[0-9]+]] [shape="record",label="main|extern (inst: 4, ffl: 000000)}"]; // function, preserved
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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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; COMBINED-NEXT: M1_[[FOO:[0-9]+]] [shape="record",label="foo|extern (inst: 4, ffl: 000010)}"]; // function
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; COMBINED-NEXT: M1_[[A:[0-9]+]] [shape="Mrecord",label="A|extern}"]; // variable, immutable
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; COMBINED-NEXT: M1_[[B:[0-9]+]] [shape="Mrecord",label="B|extern}"]; // variable, immutable, constant
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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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; 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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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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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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