[llvm] [LowerTypeTests] Add debug info to jump table entries (PR #192736)
Vitaly Buka via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 22 20:07:42 PDT 2026
https://github.com/vitalybuka updated https://github.com/llvm/llvm-project/pull/192736
>From 1d7deb7015f34e954fa3100dd41fc67243591986 Mon Sep 17 00:00:00 2001
From: Vitaly Buka <vitalybuka at google.com>
Date: Fri, 17 Apr 2026 13:53:30 -0700
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20change?=
=?UTF-8?q?s=20to=20main=20this=20commit=20is=20based=20on?=
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Created using spr 1.3.7
[skip ci]
---
llvm/lib/Transforms/IPO/LowerTypeTests.cpp | 6 +
.../LowerTypeTests/aarch64-jumptable.ll | 65 +++++++-
.../LowerTypeTests/x86-jumptable.ll | 155 +++++++++++++++++-
3 files changed, 209 insertions(+), 17 deletions(-)
diff --git a/llvm/lib/Transforms/IPO/LowerTypeTests.cpp b/llvm/lib/Transforms/IPO/LowerTypeTests.cpp
index 323df2a6a0abf..a390b983b1ded 100644
--- a/llvm/lib/Transforms/IPO/LowerTypeTests.cpp
+++ b/llvm/lib/Transforms/IPO/LowerTypeTests.cpp
@@ -35,6 +35,7 @@
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
+#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
@@ -123,6 +124,11 @@ static cl::opt<std::string> ClWriteSummary(
cl::desc("Write summary to given YAML file after running pass"),
cl::Hidden);
+static cl::opt<bool>
+ ClAnnotateDebugInfo("lowertypetests-annotate-debug-info",
+ cl::desc("Create debug info for generate function"),
+ cl::Hidden);
+
bool BitSetInfo::containsGlobalOffset(uint64_t Offset) const {
if (Offset < ByteOffset)
return false;
diff --git a/llvm/test/Transforms/LowerTypeTests/aarch64-jumptable.ll b/llvm/test/Transforms/LowerTypeTests/aarch64-jumptable.ll
index 8a90174bb3ff1..00c11b5b85bc7 100644
--- a/llvm/test/Transforms/LowerTypeTests/aarch64-jumptable.ll
+++ b/llvm/test/Transforms/LowerTypeTests/aarch64-jumptable.ll
@@ -1,5 +1,6 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes --include-generated-funcs --version 2
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes --check-globals --include-generated-funcs
; RUN: opt -S -passes=lowertypetests -mtriple=aarch64-unknown-linux-gnu %s | FileCheck --check-prefixes=AARCH64 %s
+; RUN: opt -S -passes=lowertypetests -lowertypetests-annotate-debug-info -mtriple=aarch64-unknown-linux-gnu %s | FileCheck --check-prefixes=AARCH64_DBG %s
; Test for the jump table generation with branch protection on AArch64
@@ -30,17 +31,27 @@ define i1 @foo(ptr %p) {
!1 = !{i32 4, !"branch-target-enforcement", i32 1}
-; AARCH64-LABEL: define hidden void @f.cfi() !type !1 {
+;.
+; AARCH64: @[[GLOB0:[0-9]+]] = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
+; AARCH64: @[[GLOB1:[0-9]+]] = private constant [0 x i8] zeroinitializer
+; AARCH64: @f = alias [8 x i8], ptr @.cfi.jumptable
+; AARCH64: @g = internal alias [8 x i8], getelementptr inbounds ([2 x [8 x i8]], ptr @.cfi.jumptable, i64 0, i64 1)
+;.
+; AARCH64_DBG: @[[GLOB0:[0-9]+]] = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
+; AARCH64_DBG: @[[GLOB1:[0-9]+]] = private constant [0 x i8] zeroinitializer
+; AARCH64_DBG: @f = alias [8 x i8], ptr @.cfi.jumptable
+; AARCH64_DBG: @g = internal alias [8 x i8], getelementptr inbounds ([2 x [8 x i8]], ptr @.cfi.jumptable, i64 0, i64 1)
+;.
+; AARCH64-LABEL: @f.cfi(
; AARCH64-NEXT: ret void
;
;
-; AARCH64-LABEL: define internal void @g.cfi() !type !1 {
+; AARCH64-LABEL: @g.cfi(
; AARCH64-NEXT: ret void
;
;
-; AARCH64-LABEL: define i1 @foo
-; AARCH64-SAME: (ptr [[P:%.*]]) {
-; AARCH64-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P]] to i64
+; AARCH64-LABEL: @foo(
+; AARCH64-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i64
; AARCH64-NEXT: [[TMP2:%.*]] = sub i64 ptrtoint (ptr getelementptr (i8, ptr @.cfi.jumptable, i64 8) to i64), [[TMP1]]
; AARCH64-NEXT: [[TMP3:%.*]] = call i64 @llvm.fshr.i64(i64 [[TMP2]], i64 [[TMP2]], i64 3)
; AARCH64-NEXT: [[TMP4:%.*]] = icmp ule i64 [[TMP3]], 1
@@ -48,10 +59,48 @@ define i1 @foo(ptr %p) {
;
;
; AARCH64: Function Attrs: naked noinline
-; AARCH64-LABEL: define private void @.cfi.jumptable
-; AARCH64-SAME: () #[[ATTR1:[0-9]+]] align 8 {
+; AARCH64-LABEL: @.cfi.jumptable(
; AARCH64-NEXT: entry:
; AARCH64-NEXT: call void asm sideeffect "bti c\0Ab $0\0A", "s"(ptr @f.cfi)
; AARCH64-NEXT: call void asm sideeffect "bti c\0Ab $0\0A", "s"(ptr @g.cfi)
; AARCH64-NEXT: unreachable
;
+;
+; AARCH64_DBG-LABEL: @f.cfi(
+; AARCH64_DBG-NEXT: ret void
+;
+;
+; AARCH64_DBG-LABEL: @g.cfi(
+; AARCH64_DBG-NEXT: ret void
+;
+;
+; AARCH64_DBG-LABEL: @foo(
+; AARCH64_DBG-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i64
+; AARCH64_DBG-NEXT: [[TMP2:%.*]] = sub i64 ptrtoint (ptr getelementptr (i8, ptr @.cfi.jumptable, i64 8) to i64), [[TMP1]]
+; AARCH64_DBG-NEXT: [[TMP3:%.*]] = call i64 @llvm.fshr.i64(i64 [[TMP2]], i64 [[TMP2]], i64 3)
+; AARCH64_DBG-NEXT: [[TMP4:%.*]] = icmp ule i64 [[TMP3]], 1
+; AARCH64_DBG-NEXT: ret i1 [[TMP4]]
+;
+;
+; AARCH64_DBG: Function Attrs: naked noinline
+; AARCH64_DBG-LABEL: @.cfi.jumptable(
+; AARCH64_DBG-NEXT: entry:
+; AARCH64_DBG-NEXT: call void asm sideeffect "bti c\0Ab $0\0A", "s"(ptr @f.cfi)
+; AARCH64_DBG-NEXT: call void asm sideeffect "bti c\0Ab $0\0A", "s"(ptr @g.cfi)
+; AARCH64_DBG-NEXT: unreachable
+;
+;.
+; AARCH64: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+; AARCH64: attributes #[[ATTR1:[0-9]+]] = { naked noinline }
+; AARCH64: attributes #[[ATTR2:[0-9]+]] = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
+;.
+; AARCH64_DBG: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+; AARCH64_DBG: attributes #[[ATTR1:[0-9]+]] = { naked noinline }
+; AARCH64_DBG: attributes #[[ATTR2:[0-9]+]] = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
+;.
+; AARCH64: [[META0:![0-9]+]] = !{i32 4, !"branch-target-enforcement", i32 1}
+; AARCH64: [[META1:![0-9]+]] = !{i32 0, !"typeid1"}
+;.
+; AARCH64_DBG: [[META0:![0-9]+]] = !{i32 4, !"branch-target-enforcement", i32 1}
+; AARCH64_DBG: [[META1:![0-9]+]] = !{i32 0, !"typeid1"}
+;.
diff --git a/llvm/test/Transforms/LowerTypeTests/x86-jumptable.ll b/llvm/test/Transforms/LowerTypeTests/x86-jumptable.ll
index 76acf9469785d..4a8cb0166cc12 100644
--- a/llvm/test/Transforms/LowerTypeTests/x86-jumptable.ll
+++ b/llvm/test/Transforms/LowerTypeTests/x86-jumptable.ll
@@ -1,6 +1,9 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals --include-generated-funcs
;; Test jump table generation with Indirect Branch Tracking on x86.
-; RUN: opt -S -passes=lowertypetests -mtriple=i686 %s | FileCheck --check-prefixes=X86,X86_32 %s
-; RUN: opt -S -passes=lowertypetests -mtriple=x86_64 %s | FileCheck --check-prefixes=X86,X86_64 %s
+; RUN: opt -S -passes=lowertypetests -mtriple=i686 %s | FileCheck --check-prefixes=X86_32 %s
+; RUN: opt -S -passes=lowertypetests -mtriple=x86_64 %s | FileCheck --check-prefixes=X86_64 %s
+; RUN: opt -S -passes=lowertypetests -lowertypetests-annotate-debug-info -mtriple=i686 %s | FileCheck --check-prefixes=X86_32_DBG %s
+; RUN: opt -S -passes=lowertypetests -lowertypetests-annotate-debug-info -mtriple=x86_64 %s | FileCheck --check-prefixes=X86_64_DBG %s
@0 = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
@@ -23,11 +26,145 @@ define i1 @foo(ptr %p) {
!0 = !{i32 0, !"typeid1"}
!1 = !{i32 8, !"cf-protection-branch", i32 1}
-; X86: define private void @.cfi.jumptable() #[[#ATTR:]] align 16 {
-; X86-NEXT: entry:
-; X86_32-NEXT: call void asm sideeffect "endbr32\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @f.cfi)
-; X86_32-NEXT: call void asm sideeffect "endbr32\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @g.cfi)
-; X86_64-NEXT: call void asm sideeffect "endbr64\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @f.cfi)
-; X86_64-NEXT: call void asm sideeffect "endbr64\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @g.cfi)
-; X86_64: attributes #[[#ATTR]] = { naked nocf_check noinline }
+;.
+; X86_32: @[[GLOB0:[0-9]+]] = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
+; X86_32: @[[GLOB1:[0-9]+]] = private constant [0 x i8] zeroinitializer
+; X86_32: @f = alias [16 x i8], ptr @.cfi.jumptable
+; X86_32: @g = internal alias [16 x i8], getelementptr inbounds ([2 x [16 x i8]], ptr @.cfi.jumptable, i32 0, i32 1)
+;.
+; X86_64: @[[GLOB0:[0-9]+]] = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
+; X86_64: @[[GLOB1:[0-9]+]] = private constant [0 x i8] zeroinitializer
+; X86_64: @f = alias [16 x i8], ptr @.cfi.jumptable
+; X86_64: @g = internal alias [16 x i8], getelementptr inbounds ([2 x [16 x i8]], ptr @.cfi.jumptable, i64 0, i64 1)
+;.
+; X86_32_DBG: @[[GLOB0:[0-9]+]] = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
+; X86_32_DBG: @[[GLOB1:[0-9]+]] = private constant [0 x i8] zeroinitializer
+; X86_32_DBG: @f = alias [16 x i8], ptr @.cfi.jumptable
+; X86_32_DBG: @g = internal alias [16 x i8], getelementptr inbounds ([2 x [16 x i8]], ptr @.cfi.jumptable, i32 0, i32 1)
+;.
+; X86_64_DBG: @[[GLOB0:[0-9]+]] = private unnamed_addr constant [2 x ptr] [ptr @f, ptr @g], align 16
+; X86_64_DBG: @[[GLOB1:[0-9]+]] = private constant [0 x i8] zeroinitializer
+; X86_64_DBG: @f = alias [16 x i8], ptr @.cfi.jumptable
+; X86_64_DBG: @g = internal alias [16 x i8], getelementptr inbounds ([2 x [16 x i8]], ptr @.cfi.jumptable, i64 0, i64 1)
+;.
+; X86_32-LABEL: @f.cfi(
+; X86_32-NEXT: ret void
+;
+;
+; X86_32-LABEL: @g.cfi(
+; X86_32-NEXT: ret void
+;
+;
+; X86_32-LABEL: @foo(
+; X86_32-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i32
+; X86_32-NEXT: [[TMP2:%.*]] = sub i32 ptrtoint (ptr getelementptr (i8, ptr @.cfi.jumptable, i32 16) to i32), [[TMP1]]
+; X86_32-NEXT: [[TMP3:%.*]] = call i32 @llvm.fshr.i32(i32 [[TMP2]], i32 [[TMP2]], i32 4)
+; X86_32-NEXT: [[TMP4:%.*]] = icmp ule i32 [[TMP3]], 1
+; X86_32-NEXT: ret i1 [[TMP4]]
+;
+;
+; X86_32-LABEL: @.cfi.jumptable(
+; X86_32-NEXT: entry:
+; X86_32-NEXT: call void asm sideeffect "endbr32\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @f.cfi)
+; X86_32-NEXT: call void asm sideeffect "endbr32\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @g.cfi)
+; X86_32-NEXT: unreachable
+;
+;
+; X86_64-LABEL: @f.cfi(
+; X86_64-NEXT: ret void
+;
+;
+; X86_64-LABEL: @g.cfi(
+; X86_64-NEXT: ret void
+;
+;
+; X86_64-LABEL: @foo(
+; X86_64-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i64
+; X86_64-NEXT: [[TMP2:%.*]] = sub i64 ptrtoint (ptr getelementptr (i8, ptr @.cfi.jumptable, i64 16) to i64), [[TMP1]]
+; X86_64-NEXT: [[TMP3:%.*]] = call i64 @llvm.fshr.i64(i64 [[TMP2]], i64 [[TMP2]], i64 4)
+; X86_64-NEXT: [[TMP4:%.*]] = icmp ule i64 [[TMP3]], 1
+; X86_64-NEXT: ret i1 [[TMP4]]
+;
+;
+; X86_64-LABEL: @.cfi.jumptable(
+; X86_64-NEXT: entry:
+; X86_64-NEXT: call void asm sideeffect "endbr64\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @f.cfi)
+; X86_64-NEXT: call void asm sideeffect "endbr64\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @g.cfi)
+; X86_64-NEXT: unreachable
+;
+;
+; X86_32_DBG-LABEL: @f.cfi(
+; X86_32_DBG-NEXT: ret void
+;
+;
+; X86_32_DBG-LABEL: @g.cfi(
+; X86_32_DBG-NEXT: ret void
+;
+;
+; X86_32_DBG-LABEL: @foo(
+; X86_32_DBG-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i32
+; X86_32_DBG-NEXT: [[TMP2:%.*]] = sub i32 ptrtoint (ptr getelementptr (i8, ptr @.cfi.jumptable, i32 16) to i32), [[TMP1]]
+; X86_32_DBG-NEXT: [[TMP3:%.*]] = call i32 @llvm.fshr.i32(i32 [[TMP2]], i32 [[TMP2]], i32 4)
+; X86_32_DBG-NEXT: [[TMP4:%.*]] = icmp ule i32 [[TMP3]], 1
+; X86_32_DBG-NEXT: ret i1 [[TMP4]]
+;
+;
+; X86_32_DBG-LABEL: @.cfi.jumptable(
+; X86_32_DBG-NEXT: entry:
+; X86_32_DBG-NEXT: call void asm sideeffect "endbr32\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @f.cfi)
+; X86_32_DBG-NEXT: call void asm sideeffect "endbr32\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @g.cfi)
+; X86_32_DBG-NEXT: unreachable
+;
+;
+; X86_64_DBG-LABEL: @f.cfi(
+; X86_64_DBG-NEXT: ret void
+;
+;
+; X86_64_DBG-LABEL: @g.cfi(
+; X86_64_DBG-NEXT: ret void
+;
+;
+; X86_64_DBG-LABEL: @foo(
+; X86_64_DBG-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i64
+; X86_64_DBG-NEXT: [[TMP2:%.*]] = sub i64 ptrtoint (ptr getelementptr (i8, ptr @.cfi.jumptable, i64 16) to i64), [[TMP1]]
+; X86_64_DBG-NEXT: [[TMP3:%.*]] = call i64 @llvm.fshr.i64(i64 [[TMP2]], i64 [[TMP2]], i64 4)
+; X86_64_DBG-NEXT: [[TMP4:%.*]] = icmp ule i64 [[TMP3]], 1
+; X86_64_DBG-NEXT: ret i1 [[TMP4]]
+;
+;
+; X86_64_DBG-LABEL: @.cfi.jumptable(
+; X86_64_DBG-NEXT: entry:
+; X86_64_DBG-NEXT: call void asm sideeffect "endbr64\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @f.cfi)
+; X86_64_DBG-NEXT: call void asm sideeffect "endbr64\0Ajmp ${0:c}@plt\0A.balign 16, 0xcc\0A", "s"(ptr @g.cfi)
+; X86_64_DBG-NEXT: unreachable
+;
+;.
+; X86_32: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+; X86_32: attributes #[[ATTR1:[0-9]+]] = { naked nocf_check noinline }
+; X86_32: attributes #[[ATTR2:[0-9]+]] = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
+;.
+; X86_64: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+; X86_64: attributes #[[ATTR1:[0-9]+]] = { naked nocf_check noinline }
+; X86_64: attributes #[[ATTR2:[0-9]+]] = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
+;.
+; X86_32_DBG: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+; X86_32_DBG: attributes #[[ATTR1:[0-9]+]] = { naked nocf_check noinline }
+; X86_32_DBG: attributes #[[ATTR2:[0-9]+]] = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
+;.
+; X86_64_DBG: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+; X86_64_DBG: attributes #[[ATTR1:[0-9]+]] = { naked nocf_check noinline }
+; X86_64_DBG: attributes #[[ATTR2:[0-9]+]] = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
+;.
+; X86_32: [[META0:![0-9]+]] = !{i32 8, !"cf-protection-branch", i32 1}
+; X86_32: [[META1:![0-9]+]] = !{i32 0, !"typeid1"}
+;.
+; X86_64: [[META0:![0-9]+]] = !{i32 8, !"cf-protection-branch", i32 1}
+; X86_64: [[META1:![0-9]+]] = !{i32 0, !"typeid1"}
+;.
+; X86_32_DBG: [[META0:![0-9]+]] = !{i32 8, !"cf-protection-branch", i32 1}
+; X86_32_DBG: [[META1:![0-9]+]] = !{i32 0, !"typeid1"}
+;.
+; X86_64_DBG: [[META0:![0-9]+]] = !{i32 8, !"cf-protection-branch", i32 1}
+; X86_64_DBG: [[META1:![0-9]+]] = !{i32 0, !"typeid1"}
+;.
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