[llvm] 446f66d - [CodeGen] Assign SHT_LLVM_LTO to .llvm.lto section (#92856)

[via llvm-commits]

Author: Fangrui Song
Date: 2024-05-21T09:27:03-07:00
New Revision: 446f66d685c2470bc7744b1d1538c4728e838e43

URL: https://github.com/llvm/llvm-project/commit/446f66d685c2470bc7744b1d1538c4728e838e43
DIFF: https://github.com/llvm/llvm-project/commit/446f66d685c2470bc7744b1d1538c4728e838e43.diff

LOG: [CodeGen] Assign SHT_LLVM_LTO to .llvm.lto section (#92856)

This follows up to SHT_LLVM_LTO (https://reviews.llvm.org/D153215) and
resolves the comment of the FatLTO patch
https://reviews.llvm.org/D146776#4430626

Added: 
    

Modified: 
    clang/test/CodeGen/fat-lto-objects.c
    llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
    llvm/test/CodeGen/X86/fat-lto-section.ll

Removed: 
    


################################################################################
diff  --git a/clang/test/CodeGen/fat-lto-objects.c b/clang/test/CodeGen/fat-lto-objects.c
index b50567c024fc8..36a73684e7bfe 100644
--- a/clang/test/CodeGen/fat-lto-objects.c
+++ b/clang/test/CodeGen/fat-lto-objects.c
@@ -62,7 +62,7 @@
 
 // ELF: .llvm.lto
 
-//      ASM: .section        .llvm.lto,"e", at progbits
+//      ASM: .section        .llvm.lto,"e", at llvm_lto
 // ASM-NEXT: .Lllvm.embedded.object:
 // ASM-NEXT:        .asciz  "BC
 // ASM-NEXT: .size   .Lllvm.embedded.object

diff  --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 3e1897ce670a6..0fc915d89f6c0 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -523,6 +523,8 @@ static unsigned getELFSectionType(StringRef Name, SectionKind K) {
 
   if (hasPrefix(Name, ".llvm.offloading"))
     return ELF::SHT_LLVM_OFFLOADING;
+  if (Name == ".llvm.lto")
+    return ELF::SHT_LLVM_LTO;
 
   if (K.isBSS() || K.isThreadBSS())
     return ELF::SHT_NOBITS;

diff  --git a/llvm/test/CodeGen/X86/fat-lto-section.ll b/llvm/test/CodeGen/X86/fat-lto-section.ll
index 30c56229a0e2a..f3ca8436affb4 100644
--- a/llvm/test/CodeGen/X86/fat-lto-section.ll
+++ b/llvm/test/CodeGen/X86/fat-lto-section.ll
@@ -5,6 +5,6 @@
 ; RUN:   | FileCheck %s --check-prefix=EXCLUDE
 
 ; EXCLUDE: Name               Type     {{.*}} ES Flg Lk Inf Al
-; EXCLUDE: .llvm.lto          PROGBITS {{.*}} 00   E  0   0  1
+; EXCLUDE: .llvm.lto          LLVM_LTO {{.*}} 00   E  0   0  1
 
 @a = global i32 1