derek.holloway
7502bf64a4
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64 lines
2.2 KiB
LLVM
64 lines
2.2 KiB
LLVM
; RUN: opt -S -passes=rewrite-statepoints-for-gc < %s | FileCheck %s
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; Regression test to incorrectly testing fixed state causing infinite loop.
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; CHECK: test
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target triple = "x86_64-unknown-linux-gnu"
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declare void @bar(ptr addrspace(1) nocapture readonly)
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declare noalias ptr addrspace(1) @foo()
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define ptr addrspace(1) @test(i1 %c, i1 %c1, i1 %c2, i1 %c3, i1 %c4, i1 %c5, i1 %c.exit) gc "statepoint-example" {
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entry:
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br i1 %c, label %ph.L, label %ph.R
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ph.L:
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%ph.L.p.b = call noalias nonnull ptr addrspace(1) @foo()
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%ph.L.p = getelementptr i8, ptr addrspace(1) %ph.L.p.b, i64 8
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br label %ph.M
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ph.R:
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%ph.R.p = call noalias nonnull ptr addrspace(1) @foo()
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br label %ph.M
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ph.M:
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%ph.M.p = phi ptr addrspace(1) [ %ph.L.p, %ph.L ], [ %ph.R.p, %ph.R ]
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br label %header
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header:
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%header.p = phi ptr addrspace(1) [ %ph.M.p, %ph.M ], [ %backedge.p, %backedge]
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br i1 %c1, label %loop.M, label %loop.R
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loop.R:
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br i1 %c2, label %loop.R.M, label %loop.R.R
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loop.R.R:
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%loop.R.R.p = call noalias nonnull ptr addrspace(1) @foo()
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br label %loop.R.M
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loop.R.M:
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%loop.R.M.p = phi ptr addrspace(1) [ %header.p, %loop.R ], [ %loop.R.R.p, %loop.R.R ]
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br label %loop.M
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loop.M:
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%loop.M.p = phi ptr addrspace(1) [ %loop.R.M.p, %loop.R.M ], [ %header.p, %header ]
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br i1 %c4, label %backedge, label %pre.backedge.R
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pre.backedge.R:
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br i1 %c5, label %pre.backedge.R.L, label %pre.backedge.R.R
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pre.backedge.R.L:
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%pre.backedge.R.L.p.b = call noalias nonnull ptr addrspace(1) @foo()
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%pre.backedge.R.L.p = getelementptr i8, ptr addrspace(1) %pre.backedge.R.L.p.b, i64 8
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br label %pre.backedge.R.M
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pre.backedge.R.R:
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%pre.backedge.R.R.p = call noalias nonnull ptr addrspace(1) @foo()
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br label %pre.backedge.R.M
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pre.backedge.R.M:
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%pre.backedge.R.M.p = phi ptr addrspace(1) [ %pre.backedge.R.L.p, %pre.backedge.R.L ], [ %pre.backedge.R.R.p, %pre.backedge.R.R ]
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br label %backedge
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backedge:
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%backedge.p = phi ptr addrspace(1) [ %pre.backedge.R.M.p, %pre.backedge.R.M ], [ %loop.M.p, %loop.M ]
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br i1 %c.exit, label %header, label %exit
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exit: ; preds = %3, %1
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call void @bar(ptr addrspace(1) align 8 %header.p) [ "deopt"() ]
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ret ptr addrspace(1) %header.p
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}
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