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Fix for large global arrays imported from C #631

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merged 8 commits into from
Aug 18, 2023
Merged

Fix for large global arrays imported from C #631

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4a038cb
Attempt to cast global.
elliottslaughter Aug 17, 2023
5475e57
Fixup.
elliottslaughter Aug 17, 2023
db7020f
Format.
elliottslaughter Aug 17, 2023
e769de3
Comment.
elliottslaughter Aug 17, 2023
d320d7e
Add large global test.
elliottslaughter Aug 18, 2023
192a690
Format.
elliottslaughter Aug 18, 2023
428e814
Refactor test.
elliottslaughter Aug 18, 2023
c8a8928
Increase test size to make sure it fails reliably.
elliottslaughter Aug 18, 2023
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10 changes: 9 additions & 1 deletion src/tcompiler.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2594,7 +2594,15 @@ struct FunctionEmitter {
Obj global;
exp->obj("value", &global);
if (T_globalvariable == global.kind("kind")) {
return EmitGlobalVariable(CU, &global, exp->string("name"));
GlobalVariable *gv =
EmitGlobalVariable(CU, &global, exp->string("name"));
// Clang (as of LLVM 7) changes the types of certain globals
// (like arrays). Change the type back to what we expect
// here so we don't cause issues downstream in the compiler.
return B->CreateBitCast(
gv,
PointerType::get(typeOfValue(exp)->type,
gv->getType()->getPointerAddressSpace()));
} else {
// functions are represented with &int8 pointers to avoid
// calling convension issues, so cast the literal to this type now
Expand Down
229 changes: 229 additions & 0 deletions tests/globals_large.t
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@@ -0,0 +1,229 @@
-- In Clang (as of LLVM 7), certain large arrays get encoded as structs,
-- particularly when they contain trailing zeros. If Terra does not emit the
-- correct code, this results in a crash.
--
-- See: https://github.com/terralang/terra/issues/630

local c = terralib.includec("stdlib.h")

local gamma_header_big = terralib.includecstring([[
const double gamma_table[8][260] = {
1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11,
1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22,
1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33,
1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44,
1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55,
1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66,
1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77,
1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88,
1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11,
2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22,
2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33,
2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44,
2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55,
2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66,
2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77,
2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88,
2.99, 2.99, 2.99, 2.99, 2.99, 2.99, 2.99, 2.99, 2.99, 2.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,

1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11,
1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22,
1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33,
1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44,
1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55,
1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66,
1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77,
1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88,
1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11,
2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22,
2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33,
2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44,
2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55,
2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66,
2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77, 2.77,
2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88, 2.88,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,

1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11,
1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22,
1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33,
1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44,
1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55,
1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66,
1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77,
1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88,
1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11,
2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22,
2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33,
2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44,
2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55, 2.55,
2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66, 2.66,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,

1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11,
1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22,
1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33,
1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44,
1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55,
1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66,
1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77,
1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88,
1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11,
2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22,
2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33,
2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,

1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11,
1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22,
1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33,
1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44,
1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55,
1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66,
1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77,
1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88,
1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11,
2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22,
2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33,
2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,

1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11,
1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22,
1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33,
1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44,
1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55,
1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66,
1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77,
1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88,
1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11,
2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22,
2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33,
2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,

1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11, 1.11,
1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22, 1.22,
1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33, 1.33,
1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44, 1.44,
1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55, 1.55,
1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66, 1.66,
1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77, 1.77,
1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88, 1.88,
1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99, 1.99,
2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00, 2.00,
2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11, 2.11,
2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22, 2.22,
2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33, 2.33,
2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44, 2.44,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,
0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00,

};
]])

print(gamma_header_big.gamma_table)

terra getGammaTableArrayBig(j : int, index : int) : double
var gval: double
gval = gamma_header_big.gamma_table[j][index]
return gval
end
getGammaTableArrayBig:setinlined(false)
-- getGammaTableArrayBig:setoptimized(false)
-- getGammaTableArrayBig:disas()

terra g3d(r_gamma_table : &double, N : int, M : int)
for x = 0, N do
for y = 0, M do
r_gamma_table[x * M + y] = getGammaTableArrayBig(x, y)
end
end
end

terra main()
var N = 8
var M = 260
var r_gamma_table_big = [&double](c.malloc(N*M*terralib.sizeof(double)))
g3d(r_gamma_table_big, N, M)
end

main()