[lld] [LLD] Track cg_profile from combination of obj and ordering file (PR #121324)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-lld

Author: Haohai Wen (HaohaiWen)

<details>
<summary>Changes</summary>

Add tests to track section reordering when both cg_profile section
and call-graph-ordering-file were given.

---
Full diff: https://github.com/llvm/llvm-project/pull/121324.diff


2 Files Affected:

- (modified) lld/test/COFF/cgprofile-obj.s (+13-6) 
- (modified) lld/test/ELF/cgprofile-obj.s (+13-5) 


``````````diff
diff --git a/lld/test/COFF/cgprofile-obj.s b/lld/test/COFF/cgprofile-obj.s
index b267850c46382c..3cb16df80eb468 100644
--- a/lld/test/COFF/cgprofile-obj.s
+++ b/lld/test/COFF/cgprofile-obj.s
@@ -2,9 +2,12 @@
 
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-win32 %s -o %t
 # RUN: lld-link /subsystem:console /entry:A %t /out:%t2 /debug:symtab
-# RUN: llvm-nm --numeric-sort %t2 | FileCheck %s
+# RUN: llvm-nm --numeric-sort %t2 | FileCheck %s --check-prefix=CG-OBJ
 # RUN: lld-link /call-graph-profile-sort:no /subsystem:console /entry:A %t /out:%t3 /debug:symtab
 # RUN: llvm-nm --numeric-sort %t3 | FileCheck %s --check-prefix=NO-CG
+# RUN: echo "D A 200" > %t.call_graph
+# RUN: lld-link /subsystem:console /entry:A %t /out:%t4 /debug:symtab /call-graph-ordering-file:%t.call_graph
+# RUN: llvm-nm --numeric-sort %t4 | FileCheck %s --check-prefix=CG-OBJ-OF
 
     .section    .text,"ax", one_only, D
 D:
@@ -33,13 +36,17 @@ Aa:
     .cg_profile B, C, 30
     .cg_profile C, D, 90
 
-# CHECK: 140001000 T A
-# CHECK: 140001001 T B
-# CHECK: 140001002 T C
-# CHECK: 140001003 t D
-
+# CG-OBJ: 140001000 T A
+# CG-OBJ: 140001001 T B
+# CG-OBJ: 140001002 T C
+# CG-OBJ: 140001003 t D
 
 # NO-CG: 140001000 t D
 # NO-CG: 140001001 T C
 # NO-CG: 140001002 T B
 # NO-CG: 140001003 T A
+
+# CG-OBJ-OF: 140001000 T C
+# CG-OBJ-OF: 140001001 t D
+# CG-OBJ-OF: 140001002 T A
+# CG-OBJ-OF: 140001003 T B
diff --git a/lld/test/ELF/cgprofile-obj.s b/lld/test/ELF/cgprofile-obj.s
index 0848adc5e4279a..82c5d035540a95 100644
--- a/lld/test/ELF/cgprofile-obj.s
+++ b/lld/test/ELF/cgprofile-obj.s
@@ -2,12 +2,15 @@
 
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 # RUN: ld.lld -e A %t.o -o %t
-# RUN: llvm-nm --no-sort %t | FileCheck %s
+# RUN: llvm-nm --no-sort %t | FileCheck %s --check-prefix=CG-OBJ
 # RUN: ld.lld --call-graph-profile-sort=none -e A %t.o -o %t
 # RUN: llvm-nm --no-sort %t | FileCheck %s --check-prefix=NO-CG
 ## --no-call-graph-profile-sort is an alias for --call-graph-profile-sort=none.
 # RUN: ld.lld --no-call-graph-profile-sort -e A %t.o -o %t1
 # RUN: cmp %t %t1
+# RUN: echo "D A 200" > %t.call_graph
+# RUN: ld.lld -e A %t.o -call-graph-ordering-file=%t.call_graph -o %t2
+# RUN: llvm-nm --no-sort %t2 | FileCheck %s --check-prefix=CG-OBJ-OF
 
     .section    .text.D,"ax", at progbits
 D:
@@ -36,12 +39,17 @@ Aa:
     .cg_profile B, C, 30
     .cg_profile C, D, 90
 
-# CHECK: 0000000000201123 t D
-# CHECK: 0000000000201122 T C
-# CHECK: 0000000000201121 T B
-# CHECK: 0000000000201120 T A
+# CG-OBJ: 0000000000201123 t D
+# CG-OBJ: 0000000000201122 T C
+# CG-OBJ: 0000000000201121 T B
+# CG-OBJ: 0000000000201120 T A
 
 # NO-CG: 0000000000201120 t D
 # NO-CG: 0000000000201121 T C
 # NO-CG: 0000000000201122 T B
 # NO-CG: 0000000000201123 T A
+
+# CG-OBJ-OF: 0000000000201121 t D
+# CG-OBJ-OF: 0000000000201120 T C
+# CG-OBJ-OF: 0000000000201123 T B
+# CG-OBJ-OF: 0000000000201122 T A

``````````

</details>


https://github.com/llvm/llvm-project/pull/121324