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a8f830427c
Self-referential constants containing references to a merged function no longer cause the MergeFunctions pass to infinite loop. Also adds a reproduction IR which would otherwise fail, which was isolated from a similar issue in Chromium. Author: jrkoenig Reviewers: nlewycky, jfb Subscribers: llvm-commits, nlewycky, jfb Differential Revision: http://reviews.llvm.org/D11208 llvm-svn: 242337
41 lines
1.2 KiB
LLVM
41 lines
1.2 KiB
LLVM
; RUN: opt -mergefunc -disable-output < %s
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; A linked list type and simple payload
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%LL = type { %S, %LL* }
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%S = type { void (%S*, i32)* }
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; Table refers to itself via GEP
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@Table = internal global [3 x %LL] [%LL { %S { void (%S*, i32)* @B }, %LL* getelementptr inbounds ([3 x %LL], [3 x %LL]* @Table, i32 0, i32 0) }, %LL { %S { void (%S*, i32)* @A }, %LL* getelementptr inbounds ([3 x %LL], [3 x %LL]* @Table, i32 0, i32 0) }, %LL { %S { void (%S*, i32)* @A }, %LL* getelementptr inbounds ([3 x %LL], [3 x %LL]* @Table, i32 0, i32 0) }], align 16
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; The body of this is irrelevant; it is long so that mergefunc doesn't skip it as a small function.
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define internal void @A(%S* %self, i32 %a) {
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%1 = add i32 %a, 32
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%2 = add i32 %1, 32
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%3 = add i32 %2, 32
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%4 = add i32 %3, 32
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%5 = add i32 %4, 32
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%6 = add i32 %5, 32
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%7 = add i32 %6, 32
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%8 = add i32 %7, 32
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%9 = add i32 %8, 32
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%10 = add i32 %9, 32
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%11 = add i32 %10, 32
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ret void
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}
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define internal void @B(%S* %self, i32 %a) {
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%1 = add i32 %a, 32
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%2 = add i32 %1, 32
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%3 = add i32 %2, 32
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%4 = add i32 %3, 32
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%5 = add i32 %4, 32
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%6 = add i32 %5, 32
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%7 = add i32 %6, 32
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%8 = add i32 %7, 32
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%9 = add i32 %8, 32
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%10 = add i32 %9, 32
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%11 = add i32 %10, 32
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ret void
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}
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