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-rw-r--r--compiler/GHC/CmmToAsm/Reg/Linear/PPC.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/CmmToAsm/Reg/Linear/PPC.hs b/compiler/GHC/CmmToAsm/Reg/Linear/PPC.hs
index e6c6015540..1e9a49f8a6 100644
--- a/compiler/GHC/CmmToAsm/Reg/Linear/PPC.hs
+++ b/compiler/GHC/CmmToAsm/Reg/Linear/PPC.hs
@@ -46,9 +46,9 @@ initFreeRegs platform = foldl' (flip releaseReg) noFreeRegs (allocatableRegs pla
getFreeRegs :: RegClass -> FreeRegs -> [RealReg] -- lazily
getFreeRegs cls (FreeRegs g f)
+ | RcFloat <- cls = [] -- no float regs on PowerPC, use double
| RcDouble <- cls = go f (0x80000000) 63
| RcInteger <- cls = go g (0x80000000) 31
- | otherwise = pprPanic "RegAllocLinear.getFreeRegs: Bad register class" (ppr cls)
where
go _ 0 _ = []
go x m i | x .&. m /= 0 = RealRegSingle i : (go x (m `shiftR` 1) $! i-1)