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2da2801c96
Summary: If the CallCounts change after an iteration of the DevirtSCCRepeatedPass, this is not reflected in the local CallCounts structure triggering the assertion checking the before/after sizes. Since it is valid for the size to change and this only uses the CallCounts for the devirtualizing heuristic, keep a <Function*, CallCount> map instead, and make the devirtualizing decision using the counts for the functions that exist both before and after the pass. Resolves PR42726. Reviewers: chandlerc Subscribers: mehdi_amini, jlebar, sanjoy.google, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D65621 llvm-svn: 367703
58 lines
944 B
LLVM
58 lines
944 B
LLVM
; RUN: opt -aa-pipeline=default -passes="default<O1>" %s -S | FileCheck %s
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; REQUIRES: asserts
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declare void @bar()
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declare void @baz(i32*)
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; CHECK-LABEL: @foo1()
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define void @foo1() {
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entry:
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%tag = alloca i32, align 4
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call void @baz(i32* %tag)
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%tmp = load i32, i32* %tag, align 4
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switch i32 %tmp, label %sw.bb799 [
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i32 10, label %sw.bb239
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]
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sw.bb239:
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call void @foo2()
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br label %cleanup871
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sw.bb799:
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call void @foo3(i32 undef)
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br label %cleanup871
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cleanup871:
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call void @bar()
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unreachable
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}
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define void @foo2() {
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call void @foo4()
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unreachable
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}
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define void @foo3(i32 %ptr) {
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call void @foo1()
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unreachable
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}
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define void @foo4() {
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entry:
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%tag = alloca i32, align 4
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call void @baz(i32* %tag)
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%tmp = load i32, i32* %tag, align 4
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switch i32 %tmp, label %sw.bb442 [
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i32 16, label %sw.bb352
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]
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sw.bb352:
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call void @foo3(i32 undef)
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unreachable
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sw.bb442:
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call void @foo2()
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unreachable
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}
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