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Bizarre code generated for a simple integer division, result computed is garbage. #13

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GoogleCodeExporter opened this issue Feb 7, 2016 · 0 comments

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auto-migrated Priority-Critical Type-Defect

GoogleCodeExporter commented Feb 7, 2016

For code in the kernel,

#define DIV 6
...
int row = blockIdx.x / DIV;

the following instructions are generated:

mul.hi.u32 %r11, %r1, -1431655765;
shr.u32 %r12, %r11, 2;


I have no clue what the compiler is doing here. But, there seems to be multiple 
problems in the DoMul code.

Original issue reported on code.google.com by Ken.Dom...@gmail.com on 12 Jun 2013 at 3:04

The text was updated successfully, but these errors were encountered:

GoogleCodeExporter added Priority-Critical Type-Defect auto-migrated labels

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