diff options
Diffstat (limited to 'gcc/loop-iv.c')
| -rw-r--r-- | gcc/loop-iv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index 83d25015976..5264e329c27 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -2361,6 +2361,9 @@ iv_number_of_iterations (struct loop *loop, rtx insn, rtx condition, iv1.step = const0_rtx; } + iv0.step = lowpart_subreg (mode, iv0.step, comp_mode); + iv1.step = lowpart_subreg (mode, iv1.step, comp_mode); + /* This is either infinite loop or the one that ends immediately, depending on initial values. Unswitching should remove this kind of conditions. */ if (iv0.step == const0_rtx && iv1.step == const0_rtx) @@ -2471,6 +2474,7 @@ iv_number_of_iterations (struct loop *loop, rtx insn, rtx condition, step = simplify_gen_unary (NEG, comp_mode, iv1.step, comp_mode); else step = iv0.step; + step = lowpart_subreg (mode, step, comp_mode); delta = simplify_gen_binary (MINUS, comp_mode, iv1.base, iv0.base); delta = lowpart_subreg (mode, delta, comp_mode); delta = simplify_gen_binary (UMOD, mode, delta, step); |