[Weekly]: Merge from branch main of upstream

Author: Laur59

CMakeLists.txt

@@ -806,8 +806,12 @@ function(
     if(run_tests)
         add_custom_target(check-picolibc-${variant})
         add_dependencies(check-picolibc-${variant} picolibc_${variant}-test)
-        add_dependencies(check-picolibc check-picolibc-${variant})
-        add_dependencies(llvm-toolchain-runtimes picolibc_${variant})
+        # Do not add armv4 or armv5 tests to the check-all
+        # targets as they currently hang.
+        if(NOT variant MATCHES "armv4|5")
+            add_dependencies(check-picolibc check-picolibc-${variant})
+            add_dependencies(llvm-toolchain-runtimes picolibc_${variant})
+        endif()
     endif()
 endfunction()
 
@@ -1312,7 +1316,11 @@ function(add_compiler_rt_tests variant)
     )
     add_custom_target(check-compiler-rt-${variant})
     add_dependencies(check-compiler-rt-${variant} compiler_rt_${variant}-check-compiler-rt)
-    add_dependencies(check-compiler-rt check-compiler-rt-${variant})
+    # Do not add armv4 or armv5 tests to the check-all
+    # targets as they currently hang.
+    if(NOT variant MATCHES "armv4|5")
+        add_dependencies(check-compiler-rt check-compiler-rt-${variant})
+    endif()
     add_dependencies(check-llvm-toolchain-runtimes-${variant} check-compiler-rt-${variant})
 endfunction()
 
@@ -1336,7 +1344,11 @@ function(add_libcxx_libcxxabi_libunwind_tests variant)
         )
         add_custom_target(${check_target}-${variant_with_extensions})
         add_dependencies(${check_target}-${variant_with_extensions} ${target_name}-${check_target})
-        add_dependencies(${check_target} ${target_name}-${check_target})
+        # Do not add armv4 or armv5 tests to the check-all
+        # targets as they currently hang.
+        if(NOT variant MATCHES "armv4|5")
+            add_dependencies(${check_target} ${target_name}-${check_target})
+        endif()
         add_dependencies(check-llvm-toolchain-runtimes-${variant} ${check_target}-${variant_with_extensions})
     endforeach()
 endfunction()
@@ -1501,7 +1513,11 @@ function(add_library_variant target_arch)
             message("C++ runtime libraries tests disabled for ${variant}")
         else()
             add_custom_target(check-llvm-toolchain-runtimes-${variant})
-            add_dependencies(check-llvm-toolchain-runtimes check-llvm-toolchain-runtimes-${variant})
+            # Do not add armv4 or armv5 tests to the check-all
+            # targets as they currently hang.
+            if(NOT variant MATCHES "armv4|5")
+                add_dependencies(check-llvm-toolchain-runtimes check-llvm-toolchain-runtimes-${variant})
+            endif()
             add_compiler_rt_tests("${variant}")
             if(CXX_LIBS)
                 add_libcxx_libcxxabi_libunwind_tests("${variant}")

OmaxLTO.cfg

@@ -1,4 +1,5 @@
 -flto=full \
 -fvirtual-function-elimination \
 -fwhole-program-vtables \
--mllvm -extra-LTO-loop-unroll=true
+-Wl,-plugin-opt=-extra-LTO-loop-unroll=true
+

docs/Screenshot_L4R5.png

@@ -6,4 +6,4 @@ In some cases it is benefitial to perform an additional loop unroll pass so that
 Use cases where this could be beneficial - multiple (N>=4) nested loops.
 
 ### Usage: 
-    -mllvm -extra-LTO-loop-unroll=true/false
+    -Wl,-plugin-opt=-extra-LTO-loop-unroll=true/false

docs/Screenshot_U5A9.png

@@ -247,10 +247,10 @@ def generate_extensions(args):
     print("# original option to check that.")
 
     for feature in all_features:
-        print(f"- Match: -march=armv.*\\+{feature}($|\+.*)")
+        print(f"- Match: -march=armv.*\\+{feature}($|\\+.*)")
         print(f"  Flags:")
         print(f"  - -march=armvX+{feature}")
-        print(f"- Match: -march=armv.*\\+no{feature}($|\+.*)")
+        print(f"- Match: -march=armv.*\\+no{feature}($|\\+.*)")
         print(f"  Flags:")
         print(f"  - -march=armvX+no{feature}")
     print()

docs/optimization-flags.md

@@ -1,8 +1,8 @@
 diff --git a/meson.build b/meson.build
-index 0fdfa0412..8e679f166 100644
+index f90f5b818..2f8d63733 100644
 --- a/meson.build
 +++ b/meson.build
-@@ -1224,6 +1224,18 @@ if get_option('newlib-retargetable-locking') != get_option('newlib-multithread')
+@@ -1310,6 +1310,18 @@ if get_option('newlib-retargetable-locking') != get_option('newlib-multithread')
    error('newlib-retargetable-locking and newlib-multithread must be set to the same value')
  endif
 
@@ -22,13 +22,13 @@ index 0fdfa0412..8e679f166 100644
  	      cc.has_argument('-fno-tree-loop-distribute-patterns'),
  	      description: 'Compiler flag to prevent detecting memcpy/memset patterns')
 diff --git a/picolibc.ld.in b/picolibc.ld.in
-index b97ea3300..04b94f35c 100644
+index 7b63ba172..cda5e1e7e 100644
 --- a/picolibc.ld.in
 +++ b/picolibc.ld.in
 @@ -68,6 +68,9 @@ SECTIONS
- 		*(.text.unlikely .text.unlikely.*)
- 		*(.text.startup .text.startup.*)
- 		*(.text .text.* .opd .opd.*)
+ 		*(.literal.unlikely .text.unlikely .literal.unlikely.* .text.unlikely.*)
+ 		*(.literal.startup .text.startup .literal.startup.* .text.startup.*)
+ 		*(.literal .text .literal.* .text.* .opd .opd.*)
 +		PROVIDE (__start___lcxx_override = .);
 +		*(__lcxx_override)
 +		PROVIDE (__stop___lcxx_override = .);

multilib-generate.py

@@ -9,11 +9,11 @@
     "llvm-project": {
       "comment": "tagType can be branch, tag or commithash",
       "tagType": "commithash",
-      "tag": "6e02e19c"
+      "tag": "06984825"
     },
     "picolibc": {
       "tagType": "commithash",
-      "tag": "fa65d578"
+      "tag": "d55527c1"
     },
     "newlib": {
       "tagType": "tag",