Truncate all ALU32 except for byte swap #1641

Job	Run time
linux_fuzzing	0s
linux_debug / build	49s
linux_debug_arm64 / build	53s
linux_debug_arm64_coverage / build	52s
linux_debug_coverage_no_retpolines / build	41s
linux_debug_coverage / build	51s
linux_debug_no_retpolines / build	41s
linux_debug_sanitizers / build	43s
linux_debug_sanitizers_no_retpolines / build	51s
linux_release / build	50s
linux_release_arm64 / build	59s
linux_release_arm64_coverage / build	55s
linux_release_coverage / build	43s
linux_release_coverage_no_retpolines / build	52s
linux_release_sanitizers / build	1m 7s
linux_release_sanitizers_no_retpolines / build	44s
linux_release_scan_build / build	58s
linux_release_scan_build_no_retpolines / build	41s
macos_debug / build	36m 37s
macos_debug_coverage / build	37m 48s
macos_debug_coverage_no_retpolines / build	35m 30s
macos_debug_no_retpolines / build	41m 33s
macos_debug_sanitizers_no_retpolines / build	41m 13s
macos_debug_sanitizers / build	36m 2s
macos_release / build	35m 43s
macos_release_coverage / build	39m 53s
macos_release_coverage_no_retpolines / build	38m 28s
macos_release_no_retpolines / build	45m 38s
macos_release_sanitizers / build	35m 40s
macos_release_sanitizers_no_retpolines / build	40m 7s
windows_debug / build	5m 11s
windows_release / build	3m 55s
windows_debug_no_retpolines / build	4m 46s
windows_release_no_retpolines / build	3m 43s
finish	0s
	8h 15m 57s

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