f42482def2
It might seem obvious, but it's not a good idea to convert a debug-intrinsic instruction into an UnreachableInst, as this means things operate differently with and without the -g option. However this can happen due to the "mutate the next instruction" API calls we make. With RemoveDIs eliminating debug intrinsics, this behaviour is at risk of changing, hence this patch ensures we only ever mutate the next _non_ debuginfo instruction into an Unreachable. The tests instrumented with the --try... flag all exercise this, I've added some metadata to a SCCP test to ensure it's exercised.
85 lines
5.1 KiB
LLVM
85 lines
5.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
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; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S --try-experimental-debuginfo-iterators | FileCheck %s
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%llvm.dbg.anchor.type = type { i32, i32 }
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%llvm.dbg.basictype.type = type { i32, ptr, ptr, ptr, i32, i64, i64, i64, i32, i32 }
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%llvm.dbg.compile_unit.type = type { i32, ptr, i32, ptr, ptr, ptr, i1, i1, ptr }
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%llvm.dbg.composite.type = type { i32, ptr, ptr, ptr, i32, i64, i64, i64, i32, ptr, ptr }
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%llvm.dbg.derivedtype.type = type { i32, ptr, ptr, ptr, i32, i64, i64, i64, i32, ptr }
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%llvm.dbg.global_variable.type = type { i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i1, i1, ptr }
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%llvm.dbg.subprogram.type = type { i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i1, i1 }
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%llvm.dbg.subrange.type = type { i32, i64, i64 }
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%struct.Group = type { %struct.Scene, %struct.Sphere, %"struct.std::list<Scene*,std::allocator<Scene*> >" }
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%struct.Ray = type { %struct.Vec, %struct.Vec }
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%struct.Scene = type { ptr }
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%struct.Sphere = type { %struct.Scene, %struct.Vec, double }
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%struct.Vec = type { double, double, double }
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%struct.__class_type_info_pseudo = type { %struct.__type_info_pseudo }
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%struct.__false_type = type <{ i8 }>
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%"struct.__gnu_cxx::new_allocator<Scene*>" = type <{ i8 }>
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%"struct.__gnu_cxx::new_allocator<std::_List_node<Scene*> >" = type <{ i8 }>
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%struct.__si_class_type_info_pseudo = type { %struct.__type_info_pseudo, ptr }
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%struct.__type_info_pseudo = type { ptr, ptr }
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%"struct.std::Hit" = type { double, %struct.Vec }
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%"struct.std::_List_base<Scene*,std::allocator<Scene*> >" = type { %"struct.std::_List_base<Scene*,std::allocator<Scene*> >::_List_impl" }
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%"struct.std::_List_base<Scene*,std::allocator<Scene*> >::_List_impl" = type { %"struct.std::_List_node_base" }
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%"struct.std::_List_const_iterator<Scene*>" = type { ptr }
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%"struct.std::_List_iterator<Scene*>" = type { ptr }
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%"struct.std::_List_node<Scene*>" = type { %"struct.std::_List_node_base", ptr }
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%"struct.std::_List_node_base" = type { ptr, ptr }
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%"struct.std::allocator<Scene*>" = type <{ i8 }>
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%"struct.std::allocator<std::_List_node<Scene*> >" = type <{ i8 }>
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%"struct.std::basic_ios<char,std::char_traits<char> >" = type { %"struct.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
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%"struct.std::basic_ostream<char,std::char_traits<char> >" = type { ptr, %"struct.std::basic_ios<char,std::char_traits<char> >" }
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%"struct.std::basic_streambuf<char,std::char_traits<char> >" = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, %"struct.std::locale" }
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%"struct.std::ctype<char>" = type { %"struct.std::locale::facet", ptr, i8, ptr, ptr, ptr, i8, [256 x i8], [256 x i8], i8 }
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%"struct.std::ios_base" = type { ptr, i32, i32, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"struct.std::locale" }
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%"struct.std::ios_base::Init" = type <{ i8 }>
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%"struct.std::ios_base::_Callback_list" = type { ptr, ptr, i32, i32 }
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%"struct.std::ios_base::_Words" = type { ptr, i32 }
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%"struct.std::list<Scene*,std::allocator<Scene*> >" = type { %"struct.std::_List_base<Scene*,std::allocator<Scene*> >" }
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%"struct.std::locale" = type { ptr }
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%"struct.std::locale::_Impl" = type { i32, ptr, i32, ptr, ptr }
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%"struct.std::locale::facet" = type { ptr, i32 }
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%"struct.std::num_get<char,std::istreambuf_iterator<char, std::char_traits<char> > >" = type { %"struct.std::locale::facet" }
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%"struct.std::num_put<char,std::ostreambuf_iterator<char, std::char_traits<char> > >" = type { %"struct.std::locale::facet" }
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%"struct.std::numeric_limits<double>" = type <{ i8 }>
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%"struct.std::type_info" = type { ptr, ptr }
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@llvm.dbg.subprogram947 = external constant %llvm.dbg.subprogram.type ; <ptr> [#uses=1]
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declare void @llvm.dbg.func.start(ptr) nounwind
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declare void @llvm.dbg.region.end(ptr) nounwind
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declare void @_ZN9__gnu_cxx13new_allocatorIP5SceneED2Ev(ptr) nounwind
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define void @_ZNSaIP5SceneED1Ev(ptr %this) nounwind {
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; CHECK-LABEL: @_ZNSaIP5SceneED1Ev(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[THIS_ADDR:%.*]] = alloca ptr, align 8
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; CHECK-NEXT: %"alloca point" = bitcast i32 0 to i32
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; CHECK-NEXT: call void @llvm.dbg.func.start(ptr @llvm.dbg.subprogram947)
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; CHECK-NEXT: store ptr [[THIS:%.*]], ptr [[THIS_ADDR]], align 8
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; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[THIS_ADDR]], align 4
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; CHECK-NEXT: call void @_ZN9__gnu_cxx13new_allocatorIP5SceneED2Ev(ptr [[TMP0]]) #[[ATTR0:[0-9]+]]
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; CHECK-NEXT: call void @llvm.dbg.region.end(ptr @llvm.dbg.subprogram947)
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; CHECK-NEXT: ret void
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;
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entry:
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%this_addr = alloca ptr ; <ptr> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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call void @llvm.dbg.func.start(ptr @llvm.dbg.subprogram947)
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store ptr %this, ptr %this_addr
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%0 = load ptr, ptr %this_addr, align 4 ; <ptr> [#uses=1]
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call void @_ZN9__gnu_cxx13new_allocatorIP5SceneED2Ev(ptr %0) nounwind
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br label %bb
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bb: ; preds = %entry
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br label %return
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return: ; preds = %bb
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call void @llvm.dbg.region.end(ptr @llvm.dbg.subprogram947)
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ret void
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}
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