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riscv-gcc-1
Commit fe0cf571 by Richard Kenner
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Correctly apply last change. 

From-SVN: r1895
parent a687e897
Showing with 3 additions and 3 deletions
gcc/combine.c
...@@ -7544,9 +7544,6 @@ simplify_comparison (code, pop0, pop1) ...@@ -7544,9 +7544,6 @@ simplify_comparison (code, pop0, pop1)
break; break;
case SUBREG: case SUBREG:
/* If the inner mode is narrower and we are extracting the low part,
we can treat the SUBREG as if it were a ZERO_EXTEND. */
if (subreg_lowpart_p (op0)
/* Check for the case where we are comparing A - C1 with C2, /* Check for the case where we are comparing A - C1 with C2,
both constants are smaller than 1/2 the maxium positive both constants are smaller than 1/2 the maxium positive
value in MODE, and the comparison is equality or unsigned. value in MODE, and the comparison is equality or unsigned.
...@@ -7576,6 +7573,9 @@ simplify_comparison (code, pop0, pop1) ...@@ -7576,6 +7573,9 @@ simplify_comparison (code, pop0, pop1)
continue; continue;
} }
/* If the inner mode is narrower and we are extracting the low part,
we can treat the SUBREG as if it were a ZERO_EXTEND. */
if (subreg_lowpart_p (op0)
&& GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (op0))) < mode_width) && GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (op0))) < mode_width)
/* Fall through */ ; /* Fall through */ ;
else else
......
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