utils: adjust the -Clean option to clean before execution
#78933
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This hoists the cleaning to prior to building the toolchain. This is particularly important as changes in the module format may cause the compiler to crash. Due to the use of Swift in the Swift compiler, we load modules early and a previous run may have left over modules from the last run, which would result in the module attempting to be loaded. This cleans out the extra modules before the toolchain build avoiding that.
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@swift-ci please smoke test |
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@swift-ci please smoke test macOS platform |
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@swift-ci please smoke test macOS platform |
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This hoists the cleaning to prior to building the toolchain. This is particularly important as changes in the module format may cause the compiler to crash. Due to the use of Swift in the Swift compiler, we load modules early and a previous run may have left over modules from the last run, which would result in the module attempting to be loaded. This cleans out the extra modules before the toolchain build avoiding that.