Ignore failing PGO/coverage tests on MinGW

src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/Makefile

@@ -1,4 +1,8 @@
 # needs-profiler-support
+# ignore-windows-gnu
+
+# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
+# properly. Since we only have GCC on the CI ignore the test for now.
 
 # ISSUE(76038): When targeting MSVC, Rust binaries built with both `-Z instrument-coverage` and
 # `-C link-dead-code` typically crash (with a seg-fault) or at best generate an empty `*.profraw`.

src/test/run-make-fulldeps/instrument-coverage-cov-reports-link-dead-code/Makefile

@@ -1,5 +1,9 @@
 # needs-profiler-support
 # ignore-msvc
+# ignore-windows-gnu
+
+# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
+# properly. Since we only have GCC on the CI ignore the test for now.
 
 # LINK_DEAD_CODE requires ignore-msvc due to Issue #76038
 LINK_DEAD_CODE=yes
@@ -8,4 +12,4 @@ LINK_DEAD_CODE=yes
 
 # ISSUE(76038): When targeting MSVC, Rust binaries built with both `-Z instrument-coverage` and
 # `-C link-dead-code` typically crash (with a seg-fault) or at best generate an empty `*.profraw`.
-# See ../instrument-coverage/coverage_tools.mk for more information.
+# See ../instrument-coverage/coverage_tools.mk for more information.

src/test/run-make-fulldeps/pgo-branch-weights/Makefile

@@ -1,4 +1,8 @@
 # needs-profiler-support
+# ignore-windows-gnu
+
+# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
+# properly. Since we only have GCC on the CI ignore the test for now.
 
 -include ../tools.mk
 

src/test/run-make-fulldeps/pgo-gen-lto/Makefile

@@ -1,4 +1,8 @@
 # needs-profiler-support
+# ignore-windows-gnu
+
+# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
+# properly. Since we only have GCC on the CI ignore the test for now.
 
 -include ../tools.mk
 

src/test/run-make-fulldeps/pgo-gen/Makefile

@@ -1,4 +1,8 @@
 # needs-profiler-support
+# ignore-windows-gnu
+
+# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
+# properly. Since we only have GCC on the CI ignore the test for now.
 
 -include ../tools.mk
 

src/test/run-make-fulldeps/pgo-indirect-call-promotion/Makefile

@@ -1,4 +1,8 @@
 # needs-profiler-support
+# ignore-windows-gnu
+
+# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
+# properly. Since we only have GCC on the CI ignore the test for now.
 
 -include ../tools.mk
 

src/test/run-make-fulldeps/pgo-use/Makefile

@@ -1,4 +1,8 @@
 # needs-profiler-support
+# ignore-windows-gnu
+
+# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
+# properly. Since we only have GCC on the CI ignore the test for now.
 
 -include ../tools.mk