[llvm] [LLVM] Add new attribute has_fake_use for llvm.fake.use-specific logic (PR #109997)
via llvm-commits
llvm-commits at lists.llvm.org
Wed Sep 25 08:01:24 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-x86
Author: Stephen Tozer (SLTozer)
<details>
<summary>Changes</summary>
Following the addition of the llvm.fake.use intrinsic and corresponding MIR instruction, two further changes are planned: to add an -fextend-lifetimes flag to Clang that emits these intrinsics, and to have -Og enable this flag by default. Currently, some logic for handling fake uses is gated by the optdebug attribute, which is intended to be switched on by -fextend-lifetimes (and by extension -Og later on). However, the decision was made that a general `optdebug` attribute should be incompatible with other opt_ attributes (e.g. optsize, optnone), since they all express different intents for how to optimize the program. We would still like to allow -fextend-lifetimes with optsize however (i.e. `-Os -fextend-lifetimes` should be legal), since it may be a useful configuration and there is no technical reason to not allow it.
This patch resolves this by adding a has_fake_uses function attribute to LLVM, which is added by -fextend-lifetimes and is used for logic that is specific to the fake use intrinsic, without also bundling in other effects of optdebug, which will include limiting or disabling certain optimizations.
---
Full diff: https://github.com/llvm/llvm-project/pull/109997.diff
26 Files Affected:
- (modified) llvm/include/llvm/Bitcode/LLVMBitCodes.h (+1)
- (modified) llvm/include/llvm/IR/Attributes.td (+3)
- (modified) llvm/lib/Bitcode/Reader/BitcodeReader.cpp (+2)
- (modified) llvm/lib/Bitcode/Writer/BitcodeWriter.cpp (+2)
- (modified) llvm/lib/CodeGen/RemoveLoadsIntoFakeUses.cpp (+3-3)
- (modified) llvm/lib/Transforms/Utils/CodeExtractor.cpp (+1)
- (modified) llvm/test/Bitcode/attributes.ll (+6)
- (modified) llvm/test/CodeGen/MIR/X86/fake-use-tailcall.mir (+1-1)
- (modified) llvm/test/CodeGen/X86/fake-use-hpfloat.ll (+1-1)
- (modified) llvm/test/CodeGen/X86/fake-use-ld.ll (+1-1)
- (modified) llvm/test/CodeGen/X86/fake-use-scheduler.mir (+2-2)
- (modified) llvm/test/CodeGen/X86/fake-use-simple-tail-call.ll (+1-1)
- (modified) llvm/test/CodeGen/X86/fake-use-suppress-load.ll (+1-1)
- (modified) llvm/test/CodeGen/X86/fake-use-tailcall.ll (+2-2)
- (modified) llvm/test/CodeGen/X86/fake-use-vector.ll (+1-1)
- (modified) llvm/test/CodeGen/X86/fake-use-vector2.ll (+1-1)
- (modified) llvm/test/CodeGen/X86/fake-use-zero-length.ll (+1-1)
- (modified) llvm/test/DebugInfo/AArch64/fake-use-global-isel.ll (+1-1)
- (modified) llvm/test/DebugInfo/X86/fake-use.ll (+1-1)
- (modified) llvm/test/Transforms/CodeGenPrepare/X86/fake-use-phi.ll (+1-1)
- (modified) llvm/test/Transforms/CodeGenPrepare/X86/fake-use-split-ret.ll (+1-1)
- (modified) llvm/test/Transforms/GVN/fake-use-constprop.ll (+1-1)
- (modified) llvm/test/Transforms/SROA/fake-use-sroa.ll (+2-2)
- (modified) llvm/utils/emacs/llvm-mode.el (+1-1)
- (modified) llvm/utils/kate/llvm.xml (+1)
- (modified) llvm/utils/vim/syntax/llvm.vim (+1)
``````````diff
diff --git a/llvm/include/llvm/Bitcode/LLVMBitCodes.h b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
index cbd92fd52fc75a..a49fa0f0698a64 100644
--- a/llvm/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
@@ -764,6 +764,7 @@ enum AttributeKindCodes {
ATTR_KIND_SANITIZE_REALTIME_UNSAFE = 97,
ATTR_KIND_CORO_ELIDE_SAFE = 98,
ATTR_KIND_NO_EXT = 99,
+ ATTR_KIND_HAS_FAKE_USES = 100,
};
enum ComdatSelectionKindCodes {
diff --git a/llvm/include/llvm/IR/Attributes.td b/llvm/include/llvm/IR/Attributes.td
index 9044d127b47946..28af0e98b2cd20 100644
--- a/llvm/include/llvm/IR/Attributes.td
+++ b/llvm/include/llvm/IR/Attributes.td
@@ -112,6 +112,9 @@ def ElementType : TypeAttr<"elementtype", [ParamAttr]>;
/// symbol.
def FnRetThunkExtern : EnumAttr<"fn_ret_thunk_extern", [FnAttr]>;
+/// Function uses fake use intrinsics to extend variable lifetimes.
+def HasFakeUses : EnumAttr<"has_fake_uses", [FnAttr]>;
+
/// Function has a hybrid patchable thunk.
def HybridPatchable : EnumAttr<"hybrid_patchable", [FnAttr]>;
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 6f997510b03609..d34c114690dad1 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -2024,6 +2024,8 @@ static Attribute::AttrKind getAttrFromCode(uint64_t Code) {
return Attribute::ElementType;
case bitc::ATTR_KIND_FNRETTHUNK_EXTERN:
return Attribute::FnRetThunkExtern;
+ case bitc::ATTR_KIND_HAS_FAKE_USES:
+ return Attribute::HasFakeUses;
case bitc::ATTR_KIND_INLINE_HINT:
return Attribute::InlineHint;
case bitc::ATTR_KIND_IN_REG:
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index d9086bfebbd2a9..e5fedf2aefd6e3 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -727,6 +727,8 @@ static uint64_t getAttrKindEncoding(Attribute::AttrKind Kind) {
return bitc::ATTR_KIND_DISABLE_SANITIZER_INSTRUMENTATION;
case Attribute::FnRetThunkExtern:
return bitc::ATTR_KIND_FNRETTHUNK_EXTERN;
+ case Attribute::HasFakeUses:
+ return bitc::ATTR_KIND_HAS_FAKE_USES;
case Attribute::Hot:
return bitc::ATTR_KIND_HOT;
case Attribute::ElementType:
diff --git a/llvm/lib/CodeGen/RemoveLoadsIntoFakeUses.cpp b/llvm/lib/CodeGen/RemoveLoadsIntoFakeUses.cpp
index 232181a199b8c2..c040a999e60786 100644
--- a/llvm/lib/CodeGen/RemoveLoadsIntoFakeUses.cpp
+++ b/llvm/lib/CodeGen/RemoveLoadsIntoFakeUses.cpp
@@ -74,9 +74,9 @@ INITIALIZE_PASS_END(RemoveLoadsIntoFakeUses, DEBUG_TYPE,
"Remove Loads Into Fake Uses", false, false)
bool RemoveLoadsIntoFakeUses::runOnMachineFunction(MachineFunction &MF) {
- // Only `optdebug` functions should contain FAKE_USEs, so don't try to run
- // this for other functions.
- if (!MF.getFunction().hasFnAttribute(Attribute::OptimizeForDebugging) ||
+ // Only `has_fake_uses` functions should contain FAKE_USEs, so don't try to
+ // run this for other functions.
+ if (!MF.getFunction().hasFnAttribute(Attribute::HasFakeUses) ||
skipFunction(MF.getFunction()))
return false;
diff --git a/llvm/lib/Transforms/Utils/CodeExtractor.cpp b/llvm/lib/Transforms/Utils/CodeExtractor.cpp
index f58448dd9562d5..508dbebd68c015 100644
--- a/llvm/lib/Transforms/Utils/CodeExtractor.cpp
+++ b/llvm/lib/Transforms/Utils/CodeExtractor.cpp
@@ -923,6 +923,7 @@ Function *CodeExtractor::constructFunction(const ValueSet &inputs,
case Attribute::Cold:
case Attribute::DisableSanitizerInstrumentation:
case Attribute::FnRetThunkExtern:
+ case Attribute::HasFakeUses:
case Attribute::Hot:
case Attribute::HybridPatchable:
case Attribute::NoRecurse:
diff --git a/llvm/test/Bitcode/attributes.ll b/llvm/test/Bitcode/attributes.ll
index a66eda19ff5735..e5b0efc489ea67 100644
--- a/llvm/test/Bitcode/attributes.ll
+++ b/llvm/test/Bitcode/attributes.ll
@@ -537,6 +537,11 @@ define void @f91(ptr dead_on_unwind %p) {
ret void
}
+; CHECK: define void @f100() [[HASFAKEUSES:#[0-9]+]]
+define void @f100() has_fake_uses {
+ ret void;
+}
+
; CHECK: define range(i32 -1, 42) i32 @range_attribute(<4 x i32> range(i32 -1, 42) %a)
define range(i32 -1, 42) i32 @range_attribute(<4 x i32> range(i32 -1, 42) %a) {
ret i32 0
@@ -615,4 +620,5 @@ define void @initializes(ptr initializes((-4, 0), (4, 8)) %a) {
; CHECK: attributes [[FNRETTHUNKEXTERN]] = { fn_ret_thunk_extern }
; CHECK: attributes [[SKIPPROFILE]] = { skipprofile }
; CHECK: attributes [[OPTDEBUG]] = { optdebug }
+; CHECK: attributes [[HASFAKEUSES]] = { has_fake_uses }
; CHECK: attributes #[[NOBUILTIN]] = { nobuiltin }
diff --git a/llvm/test/CodeGen/MIR/X86/fake-use-tailcall.mir b/llvm/test/CodeGen/MIR/X86/fake-use-tailcall.mir
index 6c2cb0e55222b2..9576060ade4397 100644
--- a/llvm/test/CodeGen/MIR/X86/fake-use-tailcall.mir
+++ b/llvm/test/CodeGen/MIR/X86/fake-use-tailcall.mir
@@ -35,7 +35,7 @@
# CHECK-NEXT: ret
--- |
- define hidden i32 @foo(i32 %i) local_unnamed_addr optdebug {
+ define hidden i32 @foo(i32 %i) local_unnamed_addr has_fake_uses {
entry:
%cmp = icmp eq i32 %i, 0
br i1 %cmp, label %if.then, label %if.else
diff --git a/llvm/test/CodeGen/X86/fake-use-hpfloat.ll b/llvm/test/CodeGen/X86/fake-use-hpfloat.ll
index fd511a6179acfe..d2548943fc4c8d 100644
--- a/llvm/test/CodeGen/X86/fake-use-hpfloat.ll
+++ b/llvm/test/CodeGen/X86/fake-use-hpfloat.ll
@@ -8,7 +8,7 @@
;
target triple = "x86_64-unknown-unknown"
-define void @_Z6doTestv() local_unnamed_addr optdebug {
+define void @_Z6doTestv() local_unnamed_addr has_fake_uses {
entry:
tail call void (...) @llvm.fake.use(half 0xH0000)
ret void
diff --git a/llvm/test/CodeGen/X86/fake-use-ld.ll b/llvm/test/CodeGen/X86/fake-use-ld.ll
index 86e7235091dd1c..d6ddcb910c53fe 100644
--- a/llvm/test/CodeGen/X86/fake-use-ld.ll
+++ b/llvm/test/CodeGen/X86/fake-use-ld.ll
@@ -10,7 +10,7 @@
; }
; /*******************************************************************/
-define x86_fp80 @actual(x86_fp80 %p1, x86_fp80 %p2, x86_fp80 %p3) optdebug {
+define x86_fp80 @actual(x86_fp80 %p1, x86_fp80 %p2, x86_fp80 %p3) has_fake_uses {
;
; CHECK: actual
;
diff --git a/llvm/test/CodeGen/X86/fake-use-scheduler.mir b/llvm/test/CodeGen/X86/fake-use-scheduler.mir
index 8b82c4ed2485dc..3c3b54eef5ee9a 100644
--- a/llvm/test/CodeGen/X86/fake-use-scheduler.mir
+++ b/llvm/test/CodeGen/X86/fake-use-scheduler.mir
@@ -26,7 +26,7 @@
@glb = common dso_local local_unnamed_addr global [100 x i32] zeroinitializer, align 16
- define dso_local i64 @foo(ptr %p) local_unnamed_addr optdebug {
+ define dso_local i64 @foo(ptr %p) local_unnamed_addr has_fake_uses {
entry:
%0 = load i32, ptr @glb, align 16
store i32 %0, ptr %p, align 4
@@ -43,7 +43,7 @@
ret i64 %add3
}
- define dso_local i64 @bar(ptr %p) local_unnamed_addr optdebug {
+ define dso_local i64 @bar(ptr %p) local_unnamed_addr has_fake_uses {
entry:
%0 = load i32, ptr @glb, align 16
store i32 %0, ptr %p, align 4
diff --git a/llvm/test/CodeGen/X86/fake-use-simple-tail-call.ll b/llvm/test/CodeGen/X86/fake-use-simple-tail-call.ll
index 45a210ef391009..b9c92692585e41 100644
--- a/llvm/test/CodeGen/X86/fake-use-simple-tail-call.ll
+++ b/llvm/test/CodeGen/X86/fake-use-simple-tail-call.ll
@@ -14,7 +14,7 @@
; ModuleID = 'test.cpp'
source_filename = "test.cpp"
-define i32 @_Z4foo1i(i32 %i) local_unnamed_addr optdebug {
+define i32 @_Z4foo1i(i32 %i) local_unnamed_addr has_fake_uses {
entry:
%call = tail call i32 @_Z3bari(i32 %i)
tail call void (...) @llvm.fake.use(i32 %i)
diff --git a/llvm/test/CodeGen/X86/fake-use-suppress-load.ll b/llvm/test/CodeGen/X86/fake-use-suppress-load.ll
index c1b442ebd79ffa..b50b10fdb71d05 100644
--- a/llvm/test/CodeGen/X86/fake-use-suppress-load.ll
+++ b/llvm/test/CodeGen/X86/fake-use-suppress-load.ll
@@ -6,7 +6,7 @@
; CHECK: movq %r{{[a-z]+,}} -{{[0-9]+\(%rsp\)}}
; CHECK-NOT: movq -{{[0-9]+\(%rsp\)}}, %r{{[a-z]+}}
-define dso_local i32 @f(ptr %p) local_unnamed_addr optdebug {
+define dso_local i32 @f(ptr %p) local_unnamed_addr has_fake_uses {
entry:
call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"() #1
notail call void (...) @llvm.fake.use(ptr %p)
diff --git a/llvm/test/CodeGen/X86/fake-use-tailcall.ll b/llvm/test/CodeGen/X86/fake-use-tailcall.ll
index 67c28dcf1301c4..f0bbc0fa4734ea 100644
--- a/llvm/test/CodeGen/X86/fake-use-tailcall.ll
+++ b/llvm/test/CodeGen/X86/fake-use-tailcall.ll
@@ -17,7 +17,7 @@
; CHECK: FAKE_USE %0
; CHECK: TCRETURN
-define void @bar(i32 %v) optdebug {
+define void @bar(i32 %v) has_fake_uses {
entry:
%call = tail call i32 @_Z3fooi(i32 %v)
%mul = mul nsw i32 %call, 3
@@ -27,7 +27,7 @@ entry:
ret void
}
-define i32 @baz(i32 %v) optdebug {
+define i32 @baz(i32 %v) has_fake_uses {
entry:
%call = tail call i32 @_Z3fooi(i32 %v)
notail call void (...) @llvm.fake.use(i32 %v)
diff --git a/llvm/test/CodeGen/X86/fake-use-vector.ll b/llvm/test/CodeGen/X86/fake-use-vector.ll
index 4d6ede30827046..9d815eef748804 100644
--- a/llvm/test/CodeGen/X86/fake-use-vector.ll
+++ b/llvm/test/CodeGen/X86/fake-use-vector.ll
@@ -36,4 +36,4 @@ declare <4 x float> @llvm.x86.sse.cvtpi2ps(<4 x float>, <1 x i64>)
; Function Attrs: nounwind
declare void @llvm.fake.use(...)
-attributes #0 = { "target-cpu"="btver2" optdebug }
+attributes #0 = { "target-cpu"="btver2" has_fake_uses }
diff --git a/llvm/test/CodeGen/X86/fake-use-vector2.ll b/llvm/test/CodeGen/X86/fake-use-vector2.ll
index 190197615775a9..868afa4bf897cb 100644
--- a/llvm/test/CodeGen/X86/fake-use-vector2.ll
+++ b/llvm/test/CodeGen/X86/fake-use-vector2.ll
@@ -24,4 +24,4 @@ entry:
declare void @llvm.fake.use(...)
-attributes #0 = { "target-cpu"="btver2" optdebug }
+attributes #0 = { "target-cpu"="btver2" has_fake_uses }
diff --git a/llvm/test/CodeGen/X86/fake-use-zero-length.ll b/llvm/test/CodeGen/X86/fake-use-zero-length.ll
index e3bdd2659dd913..16578327c068aa 100644
--- a/llvm/test/CodeGen/X86/fake-use-zero-length.ll
+++ b/llvm/test/CodeGen/X86/fake-use-zero-length.ll
@@ -17,7 +17,7 @@
source_filename = "test.ll"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-define hidden i32 @main([0 x i32] %zero, [1 x i32] %one) local_unnamed_addr optdebug {
+define hidden i32 @main([0 x i32] %zero, [1 x i32] %one) local_unnamed_addr has_fake_uses {
entry:
notail call void (...) @bar([0 x i32] %zero)
notail call void (...) @baz([1 x i32] %one)
diff --git a/llvm/test/DebugInfo/AArch64/fake-use-global-isel.ll b/llvm/test/DebugInfo/AArch64/fake-use-global-isel.ll
index 65a64583096959..bb0b69e9f21073 100644
--- a/llvm/test/DebugInfo/AArch64/fake-use-global-isel.ll
+++ b/llvm/test/DebugInfo/AArch64/fake-use-global-isel.ll
@@ -33,7 +33,7 @@ source_filename = "t2.c"
@glob = common local_unnamed_addr global [10 x i32] zeroinitializer, align 16, !dbg !0
; Function Attrs: nounwind sspstrong uwtable
-define i32 @foo(i32 %b, i32 %i) local_unnamed_addr optdebug !dbg !13 {
+define i32 @foo(i32 %b, i32 %i) local_unnamed_addr has_fake_uses !dbg !13 {
entry:
#dbg_value(i32 %b, !17, !20, !21)
%c = add i32 %b, 42
diff --git a/llvm/test/DebugInfo/X86/fake-use.ll b/llvm/test/DebugInfo/X86/fake-use.ll
index 5ac5104a167118..27c5be16be7a05 100644
--- a/llvm/test/DebugInfo/X86/fake-use.ll
+++ b/llvm/test/DebugInfo/X86/fake-use.ll
@@ -30,7 +30,7 @@ source_filename = "t2.c"
@glob = common local_unnamed_addr global [10 x i32] zeroinitializer, align 16, !dbg !0
; Function Attrs: nounwind sspstrong uwtable
-define i32 @foo(i32 %b, i32 %i) local_unnamed_addr optdebug !dbg !13 {
+define i32 @foo(i32 %b, i32 %i) local_unnamed_addr has_fake_uses !dbg !13 {
entry:
#dbg_value(i32 %b, !17, !20, !21)
%c = add i32 %b, 42
diff --git a/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-phi.ll b/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-phi.ll
index 064d3f29dd9ebb..c8b280e7c3d042 100644
--- a/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-phi.ll
+++ b/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-phi.ll
@@ -25,7 +25,7 @@ source_filename = "test.ll"
declare i32 @foo(ptr nonnull dereferenceable(1)) local_unnamed_addr
declare i32 @bar(ptr nonnull dereferenceable(1)) local_unnamed_addr
-define hidden void @func(ptr nonnull dereferenceable(1) %this) local_unnamed_addr align 2 optdebug {
+define hidden void @func(ptr nonnull dereferenceable(1) %this) local_unnamed_addr align 2 has_fake_uses {
entry:
%b = getelementptr inbounds %class.a, ptr %this, i64 0, i32 0
%0 = load i8, i8* %b, align 1
diff --git a/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-split-ret.ll b/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-split-ret.ll
index b2cf89f6f2dd82..ffa61174c60f09 100644
--- a/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-split-ret.ll
+++ b/llvm/test/Transforms/CodeGenPrepare/X86/fake-use-split-ret.ll
@@ -17,7 +17,7 @@
declare i32 @_Z3bari(i32) local_unnamed_addr
-define i32 @_Z4foo2i(i32 %i) local_unnamed_addr optdebug {
+define i32 @_Z4foo2i(i32 %i) local_unnamed_addr has_fake_uses {
entry:
%dec = add nsw i32 %i, -1
%cmp = icmp slt i32 %i, 2
diff --git a/llvm/test/Transforms/GVN/fake-use-constprop.ll b/llvm/test/Transforms/GVN/fake-use-constprop.ll
index 1466f9f9fca277..9691de90170132 100644
--- a/llvm/test/Transforms/GVN/fake-use-constprop.ll
+++ b/llvm/test/Transforms/GVN/fake-use-constprop.ll
@@ -37,7 +37,7 @@
; CHECK: call {{.+}} @bees(i8 0)
; CHECK: call {{.+}} @llvm.fake.use(i8 %[[CONV_VAR]])
-define i32 @foo(float %f) optdebug {
+define i32 @foo(float %f) has_fake_uses {
%conv = fptosi float %f to i8
%tobool3 = icmp eq i8 %conv, 0
br i1 %tobool3, label %if.end, label %lab
diff --git a/llvm/test/Transforms/SROA/fake-use-sroa.ll b/llvm/test/Transforms/SROA/fake-use-sroa.ll
index 9e92df15487506..9a342ca53719fa 100644
--- a/llvm/test/Transforms/SROA/fake-use-sroa.ll
+++ b/llvm/test/Transforms/SROA/fake-use-sroa.ll
@@ -25,7 +25,7 @@
; CHECK: %[[SLICE2:[^ ]+]] = trunc i64
; CHECK-DAG: call{{.*}} @llvm.fake.use(i32 %[[SLICE1]])
; CHECK-DAG: call{{.*}} @llvm.fake.use(i32 %[[SLICE2]])
-define dso_local void @foo(i64 %S.coerce) optdebug {
+define dso_local void @foo(i64 %S.coerce) has_fake_uses {
entry:
%S = alloca %struct.s, align 4
store i64 %S.coerce, ptr %S, align 4
@@ -40,7 +40,7 @@ entry:
; CHECK: %[[ARRAYSLICE2:[^ ]+]] = load
; CHECK-DAG: call{{.*}} @llvm.fake.use(i32 %[[ARRAYSLICE1]])
; CHECK-DAG: call{{.*}} @llvm.fake.use(i32 %[[ARRAYSLICE2]])
-define dso_local void @bar() optdebug {
+define dso_local void @bar() has_fake_uses {
entry:
%arr = alloca [2 x i32], align 4
call void @llvm.memcpy.p0i8.p0i8.i64(ptr align 4 %arr, ptr align 4 bitcast (ptr @__const.bar.arr to ptr), i64 8, i1 false)
diff --git a/llvm/utils/emacs/llvm-mode.el b/llvm/utils/emacs/llvm-mode.el
index dab37833ff63a9..30b6a8610a3515 100644
--- a/llvm/utils/emacs/llvm-mode.el
+++ b/llvm/utils/emacs/llvm-mode.el
@@ -30,7 +30,7 @@
(list
;; Attributes
`(,(regexp-opt
- '("alwaysinline" "argmemonly" "allocsize" "builtin" "cold" "convergent" "dereferenceable" "dereferenceable_or_null" "hot" "immarg" "inaccessiblememonly"
+ '("alwaysinline" "argmemonly" "allocsize" "builtin" "cold" "convergent" "dereferenceable" "dereferenceable_or_null" "has_fake_uses" "hot" "immarg" "inaccessiblememonly"
"inaccessiblemem_or_argmemonly" "inalloca" "inlinehint" "jumptable" "minsize" "mustprogress" "naked" "nobuiltin" "nonnull" "nocapture"
"nocallback" "nocf_check" "noduplicate" "nofree" "noimplicitfloat" "noinline" "nomerge" "nonlazybind" "noprofile" "noredzone" "noreturn"
"norecurse" "nosync" "noundef" "nounwind" "nosanitize_bounds" "nosanitize_coverage" "null_pointer_is_valid" "optdebug" "optforfuzzing" "optnone" "optsize" "preallocated" "readnone" "readonly" "returned" "returns_twice"
diff --git a/llvm/utils/kate/llvm.xml b/llvm/utils/kate/llvm.xml
index 0e7aec3880e6b4..3cd76a084e48b6 100644
--- a/llvm/utils/kate/llvm.xml
+++ b/llvm/utils/kate/llvm.xml
@@ -87,6 +87,7 @@
<item> dereferenceable_or_null </item>
<item> extern_weak </item>
<item> hhvmcc </item>
+ <item> has_fake_uses </item>
<item> hot </item>
<item> inaccessiblemem_or_argmemonly </item>
<item> inaccessiblememonly </item>
diff --git a/llvm/utils/vim/syntax/llvm.vim b/llvm/utils/vim/syntax/llvm.vim
index fac509c355cb8a..9a89ba32c33760 100644
--- a/llvm/utils/vim/syntax/llvm.vim
+++ b/llvm/utils/vim/syntax/llvm.vim
@@ -94,6 +94,7 @@ syn keyword llvmKeyword
\ from
\ gc
\ global
+ \ has_fake_uses
\ hhvm_ccc
\ hhvmcc
\ hidden
``````````
</details>
https://github.com/llvm/llvm-project/pull/109997
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