On Thu, Jun 13, 2013 at 3:27 AM, Bin Cheng <bin.ch...@arm.com> wrote: > Hi, > This is a case of NOP_EXPR and CONVERT_EXPR not compared equal in > operand_equal_p, resulting in below two nodes are considered different: > > NODE 0: > <convert_expr 0xb72ddb04 > type <integer_type 0xb74602a0 short int sizes-gimplified public HI > size <integer_cst 0xb744e7c4 constant 16> > unit size <integer_cst 0xb744e7e0 constant 2> > align 16 symtab 0 alias set 4 canonical type 0xb74602a0 > precision 16 min <integer_cst 0xb744e770 -32768> max <integer_cst > 0xb744e78c 32767> context <translation_unit_decl 0xb760dd80 D.6120> > pointer_to_this <pointer_type 0xb7241600>> > > arg 0 <ssa_name 0xb72882f8 > type <integer_type 0xb7460420 long int sizes-gimplified public SI > size <integer_cst 0xb744e55c constant 32> > unit size <integer_cst 0xb744e578 constant 4> > align 32 symtab 0 alias set 5 canonical type 0xb7460420 > precision 32 min <integer_cst 0xb744e888 -2147483648> max <integer_cst > 0xb744e8a4 2147483647> context <translation_unit_decl 0xb760dd80 > D.6120> > pointer_to_this <pointer_type 0xb74677e0>> > visiteddef_stmt _23 = *_22; > > version 23>> > > NODE 1: > <nop_expr 0xb72e1b54 > type <integer_type 0xb74602a0 short int sizes-gimplified public HI > size <integer_cst 0xb744e7c4 constant 16> > unit size <integer_cst 0xb744e7e0 constant 2> > align 16 symtab 0 alias set 4 canonical type 0xb74602a0 > precision 16 min <integer_cst 0xb744e770 -32768> max <integer_cst > 0xb744e78c 32767> context <translation_unit_decl 0xb760dd80 D.6120> > pointer_to_this <pointer_type 0xb7241600>> > > arg 0 <ssa_name 0xb72882f8 > type <integer_type 0xb7460420 long int sizes-gimplified public SI > size <integer_cst 0xb744e55c constant 32> > unit size <integer_cst 0xb744e578 constant 4> > align 32 symtab 0 alias set 5 canonical type 0xb7460420 > precision 32 min <integer_cst 0xb744e888 -2147483648> max <integer_cst > 0xb744e8a4 2147483647> context <translation_unit_decl 0xb760dd80 > D.6120> > pointer_to_this <pointer_type 0xb74677e0>> > visiteddef_stmt _23 = *_22; > > version 23>> > > > This patch fixes the problem. Please refer to > http://gcc.gnu.org/ml/gcc/2013-05/msg00199.html for more information. > > Bootstrap and test on x86 and cortex-a15. Is it OK?
Ok. Thanks, Richard. > Thanks. > bin > > 2013-06-13 Bin Cheng <bin.ch...@arm.com> > > * fold-const.c (operand_equal_p): Consider NOP_EXPR and CONVERT_EXPR > as equal nodes.
