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| author | Mikael Pettersson <[email protected]> | 2015-01-08 19:26:38 +0100 |
|---|---|---|
| committer | Mikael Pettersson <[email protected]> | 2015-01-11 13:07:43 +0100 |
| commit | eb255403b28bc1330d34d1d64ad8b8b42788c7ae (patch) | |
| tree | 0aec9325d5407459f93ec9994d0f4509624e65c1 /lib/hipe/ppc | |
| parent | aee18f309d41691019fc323bd41c5f78be49953b (diff) | |
| download | otp-eb255403b28bc1330d34d1d64ad8b8b42788c7ae.tar.gz otp-eb255403b28bc1330d34d1d64ad8b8b42788c7ae.tar.bz2 otp-eb255403b28bc1330d34d1d64ad8b8b42788c7ae.zip | |
hipe: backends: correct #fconv{} translation
RTL can produce an #fconv{} instruction with an immediate operand, but
the backends unconditionally access the operand as a temporary. This
results in broken representation in the backends and eventually they
crash.
Diffstat (limited to 'lib/hipe/ppc')
| -rw-r--r-- | lib/hipe/ppc/hipe_rtl_to_ppc.erl | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/lib/hipe/ppc/hipe_rtl_to_ppc.erl b/lib/hipe/ppc/hipe_rtl_to_ppc.erl index 7dfa56df29..a55fc137c3 100644 --- a/lib/hipe/ppc/hipe_rtl_to_ppc.erl +++ b/lib/hipe/ppc/hipe_rtl_to_ppc.erl @@ -102,10 +102,18 @@ conv_insn(I, Map, Data) -> end. conv_fconv(I, Map, Data) -> - %% Dst := (double)Src, where Dst is FP reg and Src is int reg + %% Dst := (double)Src, where Dst is FP reg and Src is GP reg or imm {Dst, Map0} = conv_fpreg(hipe_rtl:fconv_dst(I), Map), - {Src, Map1} = conv_src(hipe_rtl:fconv_src(I), Map0), % exclude imm src - I2 = mk_fconv(Dst, Src), + {Src, Map1} = conv_src(hipe_rtl:fconv_src(I), Map0), + I2 = + case hipe_ppc:is_temp(Src) of + true -> + mk_fconv(Dst, Src); + false -> + Tmp = new_untagged_temp(), + mk_li(Tmp, Src, + mk_fconv(Dst, Tmp)) + end, {I2, Map1, Data}. mk_fconv(Dst, Src) -> |