Integrate LLVM at llvm/llvm-project@ac4bd74190fe

Updates LLVM usage to match
[ac4bd74190fe](llvm/llvm-project@ac4bd74190fe)

PiperOrigin-RevId: 690979766

third_party/llvm/generated.patch

@@ -1,151 +1 @@
 Auto generated patch. Do not edit or delete it, even if empty.
-diff -ruN --strip-trailing-cr a/llvm/lib/Linker/IRMover.cpp b/llvm/lib/Linker/IRMover.cpp
---- a/llvm/lib/Linker/IRMover.cpp
-+++ b/llvm/lib/Linker/IRMover.cpp
-@@ -595,11 +595,15 @@
-   if (!SGV)
-     return nullptr;
-
-+  // If SGV is from dest, it was already materialized when dest was loaded.
-+  if (SGV->getParent() == &DstM)
-+    return nullptr;
-+
-   // When linking a global from other modules than source & dest, skip
-   // materializing it because it would be mapped later when its containing
-   // module is linked. Linking it now would potentially pull in many types that
-   // may not be mapped properly.
--  if (SGV->getParent() != &DstM && SGV->getParent() != SrcM.get())
-+  if (SGV->getParent() != SrcM.get())
-     return nullptr;
-
-   Expected<Constant *> NewProto = linkGlobalValueProto(SGV, ForIndirectSymbol);
-diff -ruN --strip-trailing-cr a/llvm/test/ThinLTO/X86/Inputs/ditemplatevalueparameter-remap.ll b/llvm/test/ThinLTO/X86/Inputs/ditemplatevalueparameter-remap.ll
---- a/llvm/test/ThinLTO/X86/Inputs/ditemplatevalueparameter-remap.ll
-+++ b/llvm/test/ThinLTO/X86/Inputs/ditemplatevalueparameter-remap.ll
-@@ -0,0 +1,29 @@
-+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
-+target triple = "x86_64-unknown-linux-gnu"
-+
-+define void @_Z8thinlto1v() unnamed_addr {
-+  %3 = alloca i64, align 4
-+    #dbg_declare(ptr %3, !14, !DIExpression(), !15)
-+  ret void
-+}
-+
-+!llvm.dbg.cu = !{!0}
-+!llvm.module.flags = !{!2, !3, !4, !5}
-+
-+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
-+!1 = !DIFile(filename: "B.cpp", directory: ".")
-+!2 = !{i32 7, !"Dwarf Version", i32 4}
-+!3 = !{i32 2, !"Debug Info Version", i32 3}
-+!4 = !{i32 1, !"wchar_size", i32 4}
-+!5 = !{i32 8, !"PIC Level", i32 2}
-+!10 = distinct !DISubprogram(name: "thinlto1", linkageName: "_Z8thinlto1v", scope: !11, file: !11, line: 8, type: !12, scopeLine: 8, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
-+!11 = !DIFile(filename: "b.cpp", directory: ".")
-+!12 = !DISubroutineType(types: !13)
-+!13 = !{null}
-+!14 = !DILocalVariable(name: "a", arg: 1, scope: !10, file: !11, line: 18, type: !16)
-+!15 = !DILocation(line: 18, column: 19, scope: !10)
-+!16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S<&func1>", file: !11, line: 2, size: 8, flags: DIFlagTypePassByValue, elements: !17, templateParams: !18, identifier: "_ZTS1SIXadL_Z5func1vEEE")
-+!17 = !{}
-+!18 = !{!19}
-+!19 = !DITemplateValueParameter(name: "Func", type: !20, value: ptr undef)
-+!20 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
-diff -ruN --strip-trailing-cr a/llvm/test/ThinLTO/X86/ditemplatevalueparameter-remap.ll b/llvm/test/ThinLTO/X86/ditemplatevalueparameter-remap.ll
---- a/llvm/test/ThinLTO/X86/ditemplatevalueparameter-remap.ll
-+++ b/llvm/test/ThinLTO/X86/ditemplatevalueparameter-remap.ll
-@@ -0,0 +1,93 @@
-+; https://github.com/llvm/llvm-project/pull/110064
-+; This test case checks if thinLTO correctly links metadata values in a specific
-+; situation. Assume we are linking module B into module A, where an extern
-+; function used in A is defined in B, but the function body has a
-+; DITemplateValueParameter referring to another function back in A. The
-+; compiler must check this other function is actually coming from A, thus
-+; already materialized and does not require remapping. The IR here is modified
-+; from the following source code.
-+;
-+; // A.h
-+; template <void (*Func)()>
-+; struct S {
-+;   void Impl() {
-+;     Func();
-+;   }
-+; };
-+;
-+; void func1();
-+;
-+; // A.cpp
-+; #include "A.h"
-+; __attribute__((weak)) void func1() {}
-+; extern void thinlto1();
-+; void bar() {
-+;   S<func1> s; // Force instantiation of S<func1> in this compilation unit.
-+;   s.Impl();
-+;   thinlto1();
-+; }
-+;
-+; // B.cpp
-+; #include "A.h"
-+; void thinlto1() {
-+;   S<func1> s;
-+; }
-+;
-+; RUN: opt -module-summary -o %t1.bc %s
-+; RUN: opt -module-summary -o %t2.bc %S/Inputs/ditemplatevalueparameter-remap.ll
-+; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t3 -save-temps \
-+; RUN:   -r=%t1.bc,_Z5func1v,p    \
-+; RUN:   -r=%t1.bc,_Z3bazv,px     \
-+; RUN:   -r=%t1.bc,_Z8thinlto1v,x \
-+; RUN:   -r=%t1.bc,_Z3barv,px     \
-+; RUN:   -r=%t2.bc,_Z8thinlto1v,px
-+; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s
-+
-+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
-+target triple = "x86_64-unknown-linux-gnu"
-+
-+$_Z5func1v = comdat any
-+
-+define linkonce_odr void @_Z5func1v() unnamed_addr !dbg !10 {
-+  ret void
-+}
-+
-+; Dummy function to use _Z5func1v so that it is not treated as dead symbol.
-+define void @_Z3bazv() {
-+  tail call void @_Z5func1v()
-+  ret void
-+}
-+
-+declare void @_Z8thinlto1v() unnamed_addr
-+
-+; Check _Z8thinlto1v is inlined after thinLTO.
-+; CHECK: void @_Z3barv()
-+; CHECK-NOT: @_Z8thinlto1v()
-+; CHECK-NEXT: ret void
-+define void @_Z3barv() unnamed_addr !dbg !14 {
-+  tail call void @_Z8thinlto1v(), !dbg !25
-+  ret void
-+}
-+
-+!llvm.dbg.cu = !{!0}
-+!llvm.module.flags = !{!2, !3, !4, !5}
-+
-+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
-+!1 = !DIFile(filename: "A.cpp", directory: ".")
-+!2 = !{i32 7, !"Dwarf Version", i32 4}
-+!3 = !{i32 2, !"Debug Info Version", i32 3}
-+!4 = !{i32 1, !"wchar_size", i32 4}
-+!5 = !{i32 8, !"PIC Level", i32 2}
-+!10 = distinct !DISubprogram(name: "func1", linkageName: "_Z5func1v", scope: !11, file: !11, line: 6, type: !12, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
-+!11 = !DIFile(filename: "a.h", directory: ".")
-+!12 = !DISubroutineType(types: !13)
-+!13 = !{null}
-+!14 = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv", scope: !11, file: !11, line: 15, type: !12, scopeLine: 15, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16)
-+!16 = !{!17}
-+!17 = !DILocalVariable(name: "s", scope: !14, file: !11, line: 10, type: !18)
-+!18 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S<&func1>", file: !11, line: 2, size: 8, flags: DIFlagTypePassByValue, elements: !19, templateParams: !20, identifier: "_ZTS1SIXadL_Z5func1vEEE")
-+!19 = !{}
-+!20 = !{!21}
-+!21 = !DITemplateValueParameter(name: "Func", type: !22, value: ptr @_Z5func1v)
-+!22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
-+!25 = !DILocation(line: 16, column: 5, scope: !14)

third_party/llvm/workspace.bzl

@@ -4,8 +4,8 @@ load("//third_party:repo.bzl", "tf_http_archive")
 
 def repo(name):
     """Imports LLVM."""
-    LLVM_COMMIT = "33363521ca24f912cc25530f6cecbca53acce8a3"
-    LLVM_SHA256 = "3fd9cbd992ed880e348d81715f39138538fd6c8e9164b981551a97181a3b7b24"
+    LLVM_COMMIT = "ac4bd74190fedfbe025ef757ff308dd184a507f5"
+    LLVM_SHA256 = "5344d79adb0049d8879fabfdac5589d4b770a02312ed8f82ce56cbf043fc86ab"
 
     tf_http_archive(
         name = name,