Bug 1451104 - part 4 - move toolchains off GCC 4.9; r=glandium

Firefox itself has moved on to GCC 6.x; we can move our toolchains along too.

taskcluster/ci/toolchain/linux.yml

@@ -25,7 +25,7 @@ linux64-clang-3.9:
             - 'taskcluster/scripts/misc/tooltool-download.sh'
         toolchain-artifact: public/build/clang.tar.xz
     toolchains:
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-clang-5:
     description: "Clang 5 toolchain build"
@@ -46,7 +46,7 @@ linux64-clang-5:
             - 'taskcluster/scripts/misc/tooltool-download.sh'
         toolchain-artifact: public/build/clang.tar.xz
     toolchains:
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-clang-6:
     description: "Clang 6 toolchain build"
@@ -68,7 +68,7 @@ linux64-clang-6:
         toolchain-alias: linux64-clang
         toolchain-artifact: public/build/clang.tar.xz
     toolchains:
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-clang-7:
     description: "Clang 7 toolchain build"
@@ -89,7 +89,7 @@ linux64-clang-7:
             - 'taskcluster/scripts/misc/tooltool-download.sh'
         toolchain-artifact: public/build/clang.tar.xz
     toolchains:
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-clang-6-macosx-cross:
     description: "Clang 6 toolchain build with MacOS Compiler RT libs"
@@ -116,7 +116,7 @@ linux64-clang-6-macosx-cross:
     toolchains:
         - linux64-cctools-port
         - linux64-clang-6
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-clang-tidy:
     description: "Clang-tidy build"
@@ -144,33 +144,7 @@ linux64-clang-tidy:
         - trunk
         - try
     toolchains:
-        - linux64-gcc-4.9
-
-linux64-gcc-4.9:
-    description: "GCC 4.9 toolchain build"
-    treeherder:
-        kind: build
-        platform: toolchains/opt
-        symbol: TL(gcc4.9)
-        tier: 1
-    worker-type: aws-provisioner-v1/gecko-{level}-b-linux
-    worker:
-        max-run-time: 3600
-    run:
-        using: toolchain-script
-        script: build-gcc-4.9-linux.sh
-        resources:
-            - 'build/unix/build-gcc/build-gcc.sh'
-        toolchain-artifact: public/build/gcc.tar.xz
-    fetches:
-        fetch:
-            - binutils-2.25.1
-            - cloog-0.18.1
-            - gcc-4.9.4
-            - gmp-5.1.3
-            - isl-0.12.2
-            - mpc-0.8.2
-            - mpfr-3.1.5
+        - linux64-gcc-6
 
 linux64-gcc-6:
     description: "GCC 6 toolchain build"
@@ -266,7 +240,7 @@ linux64-llvm-dsymutil:
         script: build-llvm-dsymutil.sh
         toolchain-artifact: public/build/llvm-dsymutil.tar.xz
     toolchains:
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-binutils:
     description: "Binutils toolchain build"
@@ -599,7 +573,7 @@ linux64-gn:
         - trunk
         - try
     toolchains:
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-tup:
     description: "tup toolchain build"
@@ -621,7 +595,7 @@ linux64-tup:
         - trunk
         - try
     toolchains:
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 linux64-upx:
     description: "UPX build for MinGW32 Cross Compile"

taskcluster/ci/toolchain/macosx.yml

@@ -33,7 +33,7 @@ macosx64-clang:
     toolchains:
         - linux64-cctools-port
         - linux64-clang-6
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 macosx64-clang-tidy:
     description: "Clang-tidy build"
@@ -63,7 +63,7 @@ macosx64-clang-tidy:
     toolchains:
         - linux64-cctools-port
         - linux64-clang-6
-        - linux64-gcc-4.9
+        - linux64-gcc-6
 
 macosx64-cctools-port:
     description: "cctools-port toolchain build"