[llvm] [llvm-objcopy] Add --change-section-address (PR #98664)

[Eleanor Bonnici via llvm-commits]

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@@ -0,0 +1,120 @@
+# RUN: yaml2obj --docnum=1 %s -o %ti
+
+# RUN: llvm-objcopy --adjust-section-vma *+0x20 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-ADD-ALL
+
+# RUN: llvm-objcopy --change-section-address *+0x20 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-ADD-ALL
+
+# RUN: llvm-objcopy --change-section-address .anotherone-0x30 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-SUB-SECTION
+
+# RUN: llvm-objcopy --change-section-address .text*+0x20 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-ADD-PATTERN
+
+# RUN: llvm-objcopy --change-section-address .text*=0x10 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-SET-PATTERN
+
+# RUN: llvm-objcopy --change-section-address .anotherone-0x30  --change-section-address .anotherone+0x20 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-USE-LAST
+
+# RUN: llvm-objcopy --change-section-address .anotherone=0x455 --change-section-address *+0x20 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-NOTSUPERSET-SET
+
+# RUN: llvm-objcopy --change-section-address *+0x20 --change-section-address .anotherone=0x455 %ti %to
+# RUN: llvm-readelf --section-headers %to | FileCheck %s --check-prefix=CHECK-SUPERSET-SET
+
+# CHECK-ADD-ALL:          [Nr] Name              Type            Address          Off    Size   ES Flg Lk Inf Al
+# CHECK-ADD-ALL:               .text1
+# CHECK-ADD-ALL-SAME:                                            0000000000000120
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eleanor-arm wrote:

I prefer using FileCheck commands over regex whenever possible.  They are easier to understand and less error prone.
In this case they could of course be replaced with regex but to me this just reduces the number of characters in the test at the expense of making creating, reading and maintaining the test harder. 

https://github.com/llvm/llvm-project/pull/98664