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When the compare feeding a branch was in a different BB from the branch, we'd try to "regenerate" the compare in the block with the branch, possibly trying to make use of values not available there. Copy a page from AArch64's play book here to fix the problem (at least in terms of correctness). Fixes PR23640. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238097 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
3.5 KiB
LLVM
73 lines
3.5 KiB
LLVM
; RUN: llc -O0 -relocation-model=pic < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-bgq-linux"
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%"class.std::__1::__tree_node.130.151" = type { %"class.std::__1::__tree_node_base.base.128.149", %"class.boost::serialization::extended_type_info.129.150"* }
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%"class.std::__1::__tree_node_base.base.128.149" = type <{ %"class.std::__1::__tree_end_node.127.148", %"class.std::__1::__tree_node_base.126.147"*, %"class.std::__1::__tree_node_base.126.147"*, i8 }>
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%"class.std::__1::__tree_end_node.127.148" = type { %"class.std::__1::__tree_node_base.126.147"* }
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%"class.std::__1::__tree_node_base.126.147" = type <{ %"class.std::__1::__tree_end_node.127.148", %"class.std::__1::__tree_node_base.126.147"*, %"class.std::__1::__tree_node_base.126.147"*, i8, [7 x i8] }>
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%"class.boost::serialization::extended_type_info.129.150" = type { i32 (...)**, i32, i8* }
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; Function Attrs: noinline
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define void @_ZN5boost13serialization18extended_type_info4findEPKc() #0 align 2 {
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entry:
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br i1 undef, label %cond.true, label %cond.false
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; CHECK: @_ZN5boost13serialization18extended_type_info4findEPKc
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cond.true: ; preds = %entry
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br label %cond.end
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cond.false: ; preds = %entry
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unreachable
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; No predecessors!
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br label %cond.end
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cond.end: ; preds = %0, %cond.true
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invoke void @_ZNKSt3__16__treeIPKN5boost13serialization18extended_type_infoENS2_6detail11key_compareENS_9allocatorIS5_EEE4findIS5_EENS_21__tree_const_iteratorIS5_PNS_11__tree_nodeIS5_PvEElEERKT_()
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to label %_ZNKSt3__18multisetIPKN5boost13serialization18extended_type_infoENS2_6detail11key_compareENS_9allocatorIS5_EEE4findERKS5_.exit unwind label %lpad
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_ZNKSt3__18multisetIPKN5boost13serialization18extended_type_infoENS2_6detail11key_compareENS_9allocatorIS5_EEE4findERKS5_.exit: ; preds = %cond.end
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br label %invoke.cont
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invoke.cont: ; preds = %_ZNKSt3__18multisetIPKN5boost13serialization18extended_type_infoENS2_6detail11key_compareENS_9allocatorIS5_EEE4findERKS5_.exit
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%1 = load %"class.std::__1::__tree_node.130.151"*, %"class.std::__1::__tree_node.130.151"** undef, align 8
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%cmp.i = icmp eq %"class.std::__1::__tree_node.130.151"* undef, %1
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br label %invoke.cont.2
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invoke.cont.2: ; preds = %invoke.cont
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br i1 %cmp.i, label %if.then, label %if.end
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if.then: ; preds = %invoke.cont.2
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br label %cleanup
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lpad: ; preds = %cond.end
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%2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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cleanup
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br label %eh.resume
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if.end: ; preds = %invoke.cont.2
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br label %invoke.cont.4
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invoke.cont.4: ; preds = %if.end
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br label %cleanup
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cleanup: ; preds = %invoke.cont.4, %if.then
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ret void
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eh.resume: ; preds = %lpad
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resume { i8*, i32 } undef
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}
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declare i32 @__gxx_personality_v0(...)
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; Function Attrs: noinline
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declare void @_ZNKSt3__16__treeIPKN5boost13serialization18extended_type_infoENS2_6detail11key_compareENS_9allocatorIS5_EEE4findIS5_EENS_21__tree_const_iteratorIS5_PNS_11__tree_nodeIS5_PvEElEERKT_() #0 align 2
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attributes #0 = { noinline "target-cpu"="a2q" }
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"PIC Level", i32 2}
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