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-O2 forces -optlo-O3 in a way that cannot be overridden at command line

I would expect -O2 -optlo-O2 to pass -O2 to the llvm optimiser. However, it seems that -O2 implies -optlo-O3, overriding the command-line's -optlo-O2.

The workaround seems to be to use -O1 -optlo-O2, but of course this misses some ghc optimizations.

Trac metadata

Trac field	Value
Version	8.0.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler (LLVM)
Test case
Differential revisions
BlockedBy
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Blocking
CC
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Architecture

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joeyhess changed weight to 5 7 years ago

changed weight to 5
joeyhess added LLVM backend Tbug Trac import labels 7 years ago

added LLVM backend Tbug Trac import labels
Ben Gamari @bgamari · 7 years ago

Maintainer

I suspect that D4421 will resolve this although I haven't yet tested it.

Trac metadata

Trac field Value

Differential revisions - → D4421
Oleg Grenrus mentioned in commit 41db237e 7 years ago

mentioned in commit 41db237e
Ben Gamari closed 7 years ago

closed
Ben Gamari changed milestone to %8.6.1 7 years ago

changed milestone to %8.6.1
Ben Gamari @bgamari · 7 years ago

Maintainer

Trac metadata

Trac field Value

Resolution Unresolved → ResolvedFixed
Ben Gamari added Pnormal label 5 years ago

added Pnormal label

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