Hi, During expand, function aarch64_vcond_internal inverses some CMP, e.g.
a LE b -> b GE a But if "b" is "CONST0_RTX", "b GE a" will be an illegal insn. Refer https://bugs.launchpad.net/linaro-toolchain-binaries/+bug/1163942 for detail about the issue. The patch is to make "b" a register when inversing LE. Is it OK for trunk, 4.8 and arm/aarch64-4.7-branch? Thanks! -Zhenqiang ChangeLog: 2013-04-10 Zhenqiang Chen <zhenqiang.c...@linaro.org> * config/aarch64/aarch64-simd.md (aarch64_vcond_internal): Set operands[5] to register when inversing LE. diff --git a/gcc/config/aarch64/aarch64-simd.md b/gcc/config/aarch64/aarch64-simd.md index 92dcfc0..d08d23a 100644 --- a/gcc/config/aarch64/aarch64-simd.md +++ b/gcc/config/aarch64/aarch64-simd.md @@ -1657,6 +1657,8 @@ complimentary_comparison = gen_aarch64_cmgt<mode>; break; case LE: + if (!REG_P (operands[5])) + operands[5] = force_reg (<MODE>mode, operands[5]); case UNLE: inverse = 1; /* Fall through. */
