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2013-08-30 Thread usedmachinery
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Re: DX register is not a return value for i386?

2013-08-30 Thread H.J. Lu
On Fri, Aug 30, 2013 at 1:54 AM, Ilya Enkovich wrote: > 2013/8/29 H.J. Lu : >> On Thu, Aug 29, 2013 at 7:33 AM, Ilya Enkovich >> wrote: >>> Hi, >>> >>> function_value_regno_p hook implementation for i386 target >>> (ix86_function_value_regno_p) always returns false for DX register. >>> But DX re

Re: this code in fold-const.c:fold_single_bit_test looks wrong to me

2013-08-30 Thread Richard Biener
On Mon, Jul 1, 2013 at 1:54 PM, Joern Rennecke wrote: > Quoting Kenneth Zadeck : > >>if (TREE_CODE (inner) == RSHIFT_EXPR >> && TREE_CODE (TREE_OPERAND (inner, 1)) == INTEGER_CST >> && TREE_INT_CST_HIGH (TREE_OPERAND (inner, 1)) == 0 >> && bitnum < TYPE_PRECISION (type) >>

Re: DX register is not a return value for i386?

2013-08-30 Thread Ilya Enkovich
2013/8/29 H.J. Lu : > On Thu, Aug 29, 2013 at 7:33 AM, Ilya Enkovich wrote: >> Hi, >> >> function_value_regno_p hook implementation for i386 target >> (ix86_function_value_regno_p) always returns false for DX register. >> But DX register is used to return 128 bit values an AX:DX. Is it >> intentio