loader: Lazily allocate ICD surface objects #2979

Job	Run time
codegen	16s
chromium	1m 19s
linux-32-no-asm	2m 5s
linux-32 (Debug)	1m 46s
linux-32 (Release)	2m 19s
linux (gcc, g++, Debug, ubuntu-20.04)	3m 31s
linux-no-asm	3m 18s
linux (gcc, g++, Debug, ubuntu-22.04)	3m 13s
linux (gcc, g++, Release, ubuntu-20.04)	8m 6s
linux (gcc, g++, Release, ubuntu-22.04)	7m 6s
linux (clang, clang++, Debug, ubuntu-20.04)	2m 51s
linux (clang, clang++, Debug, ubuntu-22.04)	2m 48s
linux (clang, clang++, Release, ubuntu-20.04)	5m 5s
linux (clang, clang++, Release, ubuntu-22.04)	5m 10s
mingw	1m 48s
mingw-use-gas	1m 22s
mingw-no-asm-explicit	56s
mingw-no-asm	1m 11s
windows_clang (clang, Debug)	3m 22s
windows_vs (Win32, Debug)	4m 57s
windows_clang (clang, Release)	3m 14s
windows_vs-no-asm (Win32)	3m 30s
windows_vs (Win32, Release)	5m 54s
windows_vs-no-asm (x64)	4m 19s
windows_clang (clang-cl, Debug)	3m 26s
windows_vs (x64, Debug)	3m 38s
windows_clang (clang-cl, Release)	3m 22s
windows_vs (x64, Release)	5m 4s
Universal Binary Testing (STATIC ON) w/ Ninja	1m 51s
iOS	38s
Universal Binary Testing (STATIC ON) w/ Xcode	2m 22s
mac (Debug, APPLE_STATIC_LOADER=ON)	3m 13s
tvOS	36s
Universal Binary Testing (STATIC OFF) w/ Ninja	2m 3s
mac (Debug, APPLE_STATIC_LOADER=OFF)	3m 16s
Universal Binary Testing (STATIC OFF) w/ Xcode	3m 24s
mac (Release, APPLE_STATIC_LOADER=ON)	3m 12s
mac (Release, APPLE_STATIC_LOADER=OFF)	4m 50s
	2h 0m 21s

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