Don't return identity for CONST or symbolic reference
gcc/ PR rtl-optimization/54157 * combine.c (gen_lowpart_for_combine): Don't return identity for CONST or symbolic reference. gcc/testsuite/ PR rtl-optimization/54157 * gcc.target/i386/pr54157.c: New file. From-SVN: r190228
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2012-08-08 Richard Sandiford <rdsandiford@googlemail.com>
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H.J. Lu <hongjiu.lu@intel.com>
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PR rtl-optimization/54157
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* combine.c (gen_lowpart_for_combine): Don't return identity
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for CONST or symbolic reference.
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2012-08-08 Michael Zolotukhin <michael.v.zolotukhin@intel.com>
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* common/config/i386/i386-common.c (OPTION_MASK_ISA_ADX_SET): New.
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@ -10634,13 +10634,6 @@ gen_lowpart_for_combine (enum machine_mode omode, rtx x)
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if (omode == imode)
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return x;
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/* Return identity if this is a CONST or symbolic reference. */
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if (omode == Pmode
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&& (GET_CODE (x) == CONST
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|| GET_CODE (x) == SYMBOL_REF
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|| GET_CODE (x) == LABEL_REF))
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return x;
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/* We can only support MODE being wider than a word if X is a
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constant integer or has a mode the same size. */
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if (GET_MODE_SIZE (omode) > UNITS_PER_WORD
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@ -1,3 +1,8 @@
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2012-08-08 H.J. Lu <hongjiu.lu@intel.com>
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PR rtl-optimization/54157
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* gcc.target/i386/pr54157.c: New file.
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2012-08-08 Michael Zolotukhin <michael.v.zolotukhin@intel.com>
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* gcc.target/i386/adx-addcarryx32-1.c: New.
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@ -0,0 +1,21 @@
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/* { dg-do compile { target { ! { ia32 } } } } */
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/* { dg-options "-O2 -mx32 -maddress-mode=long -ftree-vectorize" } */
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struct s2{
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int n[24 -1][24 -1][24 -1];
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};
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struct test2{
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struct s2 e;
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};
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struct test2 tmp2[4];
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void main1 ()
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{
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int i,j;
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for (i = 0; i < 24 -4; i++)
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for (j = 0; j < 24 -4; j++)
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tmp2[2].e.n[1][i][j] = 8;
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}
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