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FIX #2388: check that the operand fits before using the 'test' opcode
author
Simon Marlow
<marlowsd@gmail.com>
Wed, 30 Jul 2008 10:52:31 +0000
(10:52 +0000)
committer
Simon Marlow
<marlowsd@gmail.com>
Wed, 30 Jul 2008 10:52:31 +0000
(10:52 +0000)
compiler/nativeGen/MachCodeGen.hs
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diff --git
a/compiler/nativeGen/MachCodeGen.hs
b/compiler/nativeGen/MachCodeGen.hs
index
b2f3dff
..
9901e62
100644
(file)
--- a/
compiler/nativeGen/MachCodeGen.hs
+++ b/
compiler/nativeGen/MachCodeGen.hs
@@
-2229,7
+2229,7
@@
condIntCode cond (CmmLoad x pk) (CmmLit lit) | is32BitLit lit = do
-- anything vs zero, using a mask
-- TODO: Add some sanity checking!!!!
condIntCode cond (CmmMachOp (MO_And rep) [x,o2]) (CmmLit (CmmInt 0 pk))
- | (CmmLit (CmmInt mask pk2)) <- o2
+ | (CmmLit lit@(CmmInt mask pk2)) <- o2, is32BitLit lit
= do
(x_reg, x_code) <- getSomeReg x
let