build

Unify scalar primitives #15258

Job	Run time
flambda2_runtime5	6m 16s
flambda2_dev	5m 11s
flambda2_dev_runtime5	5m 8s
flambda2_debug_runtime5	6m 22s
flambda2_debug_runtime	6m 21s
flambda2_o3	6m 3s
flambda2_o3_heap	6m 6s
flambda2_o3_advanced_meet_frame_pointers_runtime5_polling	6m 15s
flambda2_o3_advanced_meet_frame_pointers_runtime5_debug	6m 25s
flambda2_frame_pointers_oclassic_polling	6m 19s
flambda2_macos_arm64	5m 52s
flambda2_macos_arm64_runtime5_irc	6m 48s
flambda2_macos_arm64_runtime5_ls	6m 39s
flambda2_macos_arm64_gi	5m 50s
irc	6m 15s
irc_polling	6m 20s
irc_frame_pointers	6m 16s
ls	6m 17s
gi	6m 15s
cfg-selection	6m 23s
vectorizer	6m 22s
	2h 9m 43s

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