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| author | Richard Sandiford <rsandifo@nildram.co.uk> | 2008-01-26 11:34:41 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2008-01-26 11:34:41 +0000 |
| commit | 1230d7f8de706221a1b6f3d81a20efc2052b7e0a (patch) | |
| tree | ccc383b0fca9cbb43bb4a0d4b1d7248771938176 /gcc/optabs.c | |
| parent | 2f35df8c1423f258a7a61fb1e0eba242b5033b5a (diff) | |
| download | gcc-1230d7f8de706221a1b6f3d81a20efc2052b7e0a.zip gcc-1230d7f8de706221a1b6f3d81a20efc2052b7e0a.tar.gz gcc-1230d7f8de706221a1b6f3d81a20efc2052b7e0a.tar.bz2 | |
re PR rtl-optimization/34959 (23_containers/bitset/ext/15361.cc fails for MIPS n64)
gcc/
PR rtl-optimization/34959
* optabs.c (expand_unop): In libcall notes, give ffs, clz, ctz,
popcount and parity rtxes the same mode as their operand.
Truncate or extend the result to the return value's mode
if necessary.
From-SVN: r131863
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index 089fccc..448b799 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -3273,6 +3273,7 @@ expand_unop (enum machine_mode mode, optab unoptab, rtx op0, rtx target, { rtx insns; rtx value; + rtx eq_value; enum machine_mode outmode = mode; /* All of these functions return small values. Thus we choose to @@ -3292,8 +3293,12 @@ expand_unop (enum machine_mode mode, optab unoptab, rtx op0, rtx target, end_sequence (); target = gen_reg_rtx (outmode); - emit_libcall_block (insns, target, value, - gen_rtx_fmt_e (unoptab->code, outmode, op0)); + eq_value = gen_rtx_fmt_e (unoptab->code, mode, op0); + if (GET_MODE_SIZE (outmode) < GET_MODE_SIZE (mode)) + eq_value = simplify_gen_unary (TRUNCATE, outmode, eq_value, mode); + else if (GET_MODE_SIZE (outmode) > GET_MODE_SIZE (mode)) + eq_value = simplify_gen_unary (ZERO_EXTEND, outmode, eq_value, mode); + emit_libcall_block (insns, target, value, eq_value); return target; } |