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Tomasz Miąsko babe1a38d3 Use more accurate estimate of generated LLVM IR with llvm-lines The `--emit=llvm-ir` emits an optimized LLVM IR. For optimized builds it will be highly inaccurate estimate of the amount IR generated initially. While the inaccuracy can be somewhat reduce after disabling the optimization, that in turn has other unintended consequences, since opt-level controls the emission of lifetime markers, sharing of generics between crates, instantiation of inline functions, etc. Use `-Csave-temps` and `no-opt` bitcode as a basis for more accurate estimate of initial work handed of to the LLVM.	2021-03-07 10:57:13 -05:00
src/doc/rustc-dev-guide	Use more accurate estimate of generated LLVM IR with llvm-lines	2021-03-07 10:57:13 -05:00

Tomasz Miąsko babe1a38d3 Use more accurate estimate of generated LLVM IR with llvm-lines

The `--emit=llvm-ir` emits an optimized LLVM IR. For optimized builds it will be
highly inaccurate estimate of the amount IR generated initially.  While the
inaccuracy can be somewhat reduce after disabling the optimization, that in turn
has other unintended consequences, since opt-level controls the emission of
lifetime markers, sharing of generics between crates, instantiation of inline
functions, etc.

Use `-Csave-temps` and `no-opt` bitcode as a basis for more accurate estimate of
initial work handed of to the LLVM.

2021-03-07 10:57:13 -05:00

src/doc/rustc-dev-guide

Use more accurate estimate of generated LLVM IR with llvm-lines

2021-03-07 10:57:13 -05:00