diff options
Diffstat (limited to 'hadrian/src/Oracles/Flag.hs')
| -rw-r--r-- | hadrian/src/Oracles/Flag.hs | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/hadrian/src/Oracles/Flag.hs b/hadrian/src/Oracles/Flag.hs index 134edc706e..90b25eef42 100644 --- a/hadrian/src/Oracles/Flag.hs +++ b/hadrian/src/Oracles/Flag.hs @@ -1,6 +1,8 @@ +{-# LANGUAGE MultiWayIf #-} + module Oracles.Flag ( - Flag (..), flag, getFlag, platformSupportsSharedLibs, ghcWithSMP, - ghcWithNativeCodeGen + Flag (..), flag, getFlag, platformSupportsSharedLibs, + ghcWithNativeCodeGen, targetSupportsSMP ) where import Hadrian.Oracles.TextFile @@ -57,11 +59,20 @@ platformSupportsSharedLibs = do solarisBroken <- flag SolarisBrokenShld return $ not (badPlatform || solaris && solarisBroken) -ghcWithSMP :: Action Bool -ghcWithSMP = do - goodArch <- anyTargetArch ["i386", "x86_64", "sparc", "powerpc", "arm", "s390x"] - ghcUnreg <- flag GhcUnregisterised - return $ goodArch && not ghcUnreg +-- | Does the target support the threaded runtime system? +targetSupportsSMP :: Action Bool +targetSupportsSMP = do + unreg <- flag GhcUnregisterised + armVer <- targetArmVersion + goodArch <- anyTargetArch ["i386", "x86_64", "sparc", "powerpc", "arm", "s390x"] + if -- The THREADED_RTS requires `BaseReg` to be in a register and the + -- Unregisterised mode doesn't allow that. + | unreg -> return False + -- We don't support load/store barriers pre-ARMv7. See #10433. + | Just ver <- armVer + , ver < ARMv7 -> return False + | goodArch -> return True + | otherwise -> return False ghcWithNativeCodeGen :: Action Bool ghcWithNativeCodeGen = do |