On 20/04/2011 18:28, Ian Lynagh wrote:
On Wed, Apr 20, 2011 at 05:02:50PM +0200, Daniel Fischer wrote:
So, is it possible that some change in ghc-7.0.3 vs. the previous versions
Very little changed between 7.0.2 and 7.0.3. The only thing that jumps
out to me as possibly being relevant is:
diff -ur 7.0.2/ghc-7.0.2/compiler/nativeGen/X86/Instr.hs
7.0.3/ghc-7.0.3/compiler/nativeGen/X86/Instr.hs
--- 7.0.2/ghc-7.0.2/compiler/nativeGen/X86/Instr.hs 2011-02-28
18:10:06.000000000 +0000
+++ 7.0.3/ghc-7.0.3/compiler/nativeGen/X86/Instr.hs 2011-03-26
18:10:04.000000000 +0000
@@ -734,6 +734,7 @@
where p insn r = case insn of
CALL _ _ -> GFREE : insn : r
JMP _ -> GFREE : insn : r
+ JXX_GBL _ _ -> GFREE : insn : r
_ -> insn : r
Right, it could be related to this. However this change was made to
eliminate some causes of NaNs, see:
http://hackage.haskell.org/trac/ghc/ticket/4914
So I'm very depressed if it managed to introduce NaNs somehow.
Could someone make a ticket for this, with the smallest test case found
so far please?
Cheers,
Simon
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