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