[llvm-branch-commits] [lld] [PAC][lld] Do not emit warnings for `-z pac-plt` with valid PAuth core info (PR #112959)

[Daniel Kiss via llvm-branch-commits]

================
@@ -33,13 +33,53 @@
 # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu no-info.s -o noinfo1.o
 # RUN: cp noinfo1.o noinfo2.o
 # RUN: not ld.lld -z pauth-report=error noinfo1.o tag1.o noinfo2.o -o /dev/null 2>&1 | FileCheck --check-prefix ERR5 %s
-# RUN: ld.lld -z pauth-report=warning noinfo1.o tag1.o noinfo2.o -o /dev/null 2>&1 | FileCheck --check-prefix WARN %s
+# RUN: ld.lld -z pauth-report=warning noinfo1.o tag1.o noinfo2.o -o /dev/null 2>&1 | FileCheck --check-prefix WARN1 %s
 # RUN: ld.lld -z pauth-report=none noinfo1.o tag1.o noinfo2.o --fatal-warnings -o /dev/null
 
 # ERR5:      error: noinfo1.o: -z pauth-report: file does not have AArch64 PAuth core info while 'tag1.o' has one
 # ERR5-NEXT: error: noinfo2.o: -z pauth-report: file does not have AArch64 PAuth core info while 'tag1.o' has one
-# WARN:      warning: noinfo1.o: -z pauth-report: file does not have AArch64 PAuth core info while 'tag1.o' has one
-# WARN-NEXT: warning: noinfo2.o: -z pauth-report: file does not have AArch64 PAuth core info while 'tag1.o' has one
+# WARN1:      warning: noinfo1.o: -z pauth-report: file does not have AArch64 PAuth core info while 'tag1.o' has one
+# WARN1-NEXT: warning: noinfo2.o: -z pauth-report: file does not have AArch64 PAuth core info while 'tag1.o' has one
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu abi-tag-zero.s            -o tag-zero.o
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %p/Inputs/aarch64-func2.s -o func2.o
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %p/Inputs/aarch64-func3.s -o func3.o
+# RUN: ld.lld func3.o --shared -o func3.so
+# RUN: ld.lld tag1.o     func2.o func3.so -z pac-plt --shared -o pacplt-nowarn --fatal-warnings
+# RUN: ld.lld tag-zero.o func2.o func3.so -z pac-plt --shared -o pacplt-warn 2>&1 | FileCheck --check-prefix WARN2 %s
+
+# WARN2:      warning: tag-zero.o: -z pac-plt: file does not have GNU_PROPERTY_AARCH64_FEATURE_1_PAC property and no valid PAuth core info present for this link job
+# WARN2-NEXT: warning: func2.o: -z pac-plt: file does not have GNU_PROPERTY_AARCH64_FEATURE_1_PAC property and no valid PAuth core info present for this link job
----------------
DanielKristofKiss wrote:

why this warning is not present for linking `pacplt-nowarn` with --fatal-warnings as func2.o is the same for both link command?


https://github.com/llvm/llvm-project/pull/112959