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| author | Uros Bizjak <ubizjak@gmail.com> | 2007-06-12 12:31:04 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2007-06-12 12:31:04 +0200 |
| commit | 7f482dfebf0aaaf2e35e53ffe16834de4eb1d375 (patch) | |
| tree | 3362e42dd7a91d98b073c7106e0c583ff2c036c8 /gcc/combine.c | |
| parent | 9883e373fc9bbdf33e1913f184f3768835b88f88 (diff) | |
| download | gcc-7f482dfebf0aaaf2e35e53ffe16834de4eb1d375.zip gcc-7f482dfebf0aaaf2e35e53ffe16834de4eb1d375.tar.gz gcc-7f482dfebf0aaaf2e35e53ffe16834de4eb1d375.tar.bz2 | |
re PR rtl-optimization/32293 (internal compiler error: in do_SUBST, at combine.c:502)
PR rtl-optimization/32293
* combine.c (simplify_if_then_else): Truncate return from
nonzero_bits() to correct mode.
testsuite/ChangeLog:
PR rtl-optimization/32293
* gcc.dg/pr32293.c: New test.
From-SVN: r125643
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index d7ac8ad..6fbf816 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -5210,11 +5210,17 @@ simplify_if_then_else (rtx x) if (true_code == EQ && true_val == const0_rtx && exact_log2 (nzb = nonzero_bits (from, GET_MODE (from))) >= 0) - false_code = EQ, false_val = GEN_INT (nzb); + { + false_code = EQ; + false_val = GEN_INT (trunc_int_for_mode (nzb, GET_MODE (from))); + } else if (true_code == EQ && true_val == const0_rtx && (num_sign_bit_copies (from, GET_MODE (from)) == GET_MODE_BITSIZE (GET_MODE (from)))) - false_code = EQ, false_val = constm1_rtx; + { + false_code = EQ; + false_val = constm1_rtx; + } /* Now simplify an arm if we know the value of the register in the branch and it is used in the arm. Be careful due to the potential |