--- a/Makefile.in
+++ b/Makefile.in
@@ -243,20 +243,22 @@ default all::
 include $(topsrcdir)/config/rules.mk
 
 ifdef SCCACHE_VERBOSE_STATS
 default::
 	-$(CCACHE) --show-stats --stats-format=json > sccache-stats.json
 	@echo "===SCCACHE STATS==="
 	-$(CCACHE) --show-stats
 	@echo "==================="
+ifndef MOZ_PROFILE_GENERATE
 # Ideally we'd do that in the same file as we set the sccache.log location for
 # sccache, but it's too late in the build.
 	-gzip -9 $(DIST)/sccache.log
 endif
+endif
 
 distclean::
 	$(RM) $(DIST_GARBAGE)
 
 ifdef MOZ_CRASHREPORTER
 include $(topsrcdir)/toolkit/mozapps/installer/package-name.mk
 
 endif

--- a/build/mozconfig.cache
+++ b/build/mozconfig.cache
@@ -9,17 +9,17 @@ if test -z "$bucket" -a -z "$NO_CACHE"; 
 
 # buildbot (or builders that use buildprops.json):
 if [ -f $topsrcdir/../buildprops.json ]; then
 read branch platform master <<EOF
 $(python2.7 -c 'import json; p = json.loads(open("'"$topsrcdir"'/../buildprops.json").read())["properties"]; print p["branch"], p["platform"], p["master"]' 2> /dev/null)
 EOF
 
 bucket=
-if test -z "$SCCACHE_DISABLE" -a -z "$MOZ_PGO_IS_SET" -a -z "$MOZ_PGO"; then
+if test -z "$SCCACHE_DISABLE"; then
     case "${branch}" in
     try)
         case "${master}" in
         *scl1.mozilla.com*|*.scl3.mozilla.com*)
             bucket=mozilla-releng-s3-cache-us-west-1-try
             ;;
         *use1.mozilla.com*)
             bucket=mozilla-releng-s3-cache-us-east-1-try
@@ -39,17 +39,17 @@ if test -z "$SCCACHE_DISABLE" -a -z "$MO
             ;;
         esac
         ;;
     esac
 fi
 fi
 
 # builds where buildprops didn't have the data (eg: taskcluster or non-buildbot) and without sccache disabled:
-if test -z "$bucket" -a -z "$SCCACHE_DISABLE" -a -z "$MOZ_PGO_IS_SET" -a -z "$MOZ_PGO"; then
+if test -z "$bucket" -a -z "$SCCACHE_DISABLE"; then
 
     # prevent rerun if az is set, or wget is not available
     if test -z "$availability_zone" -a -x "$(command -v wget)"; then
         if test -n "${TASKCLUSTER_WORKER_GROUP}"; then
             # TASKCLUSTER_WORKER_GROUP is just the region now, so
             # stick an extra character on to make the already-convoluted logic
             # here simpler.
             availability_zone="${TASKCLUSTER_WORKER_GROUP}x"