Add fallback to inline #259

Job	Run time
build-native-gcc	4m 4s
build-native-llvm	6m 44s
test-native-gcc	10m 24s
test-native-llvm	8m 30s
build-aarch64-gcc	6m 33s
build-aarch64-llvm	5m 35s
build-armhf-gcc	4m 8s
build-armhf-llvm	3m 28s
build-ppc64el-gcc	10m 3s
build-ppc64el-llvm	6m 26s
build-s390x-gcc	8m 0s
build-s390x-llvm	9m 12s
build-riscv64-llvm	6m 27s
test-aarch64-gcc (qemu_cpu: "max,sve=off")	20s
test-aarch64-gcc (qemu_cpu: "max,sve=on,sve128=on")	16s
test-aarch64-gcc (qemu_cpu: "max,sve=on,sve256=on")	30s
test-aarch64-gcc (qemu_cpu: "max,sve=on,sve512=on")	16s
test-aarch64-llvm (qemu_cpu: "max,sve=off")	24s
test-aarch64-llvm (qemu_cpu: "max,sve=on,sve128=on")	15s
test-aarch64-llvm (qemu_cpu: "max,sve=on,sve256=on")	14s
test-aarch64-llvm (qemu_cpu: "max,sve=on,sve512=on")	29m 55s
test-armhf-gcc (qemu_cpu: "max")	16s
test-armhf-llvm (qemu_cpu: "max")	21s
test-ppc64el-gcc (qemu_cpu: "power10")	15s
test-ppc64el-llvm (qemu_cpu: "power10")	15s
test-s390x-gcc (qemu_cpu: "")	31s
test-s390x-llvm (qemu_cpu: "")	16s
test-riscv64-llvm (qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=false")	22s
test-riscv64-llvm (qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=128,elen=64,vext_spec=v1.0")	14s
test-riscv64-llvm (qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=256,elen=64,vext_spec=v1.0")	20s
test-riscv64-llvm (qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=512,elen=64,vext_spec=v1.0")	19s
	2h 4m 53s

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