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The vbroadcast family of instructions has 'fallback patterns' in case where the

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load source operand is used by multiple nodes. The v2i64 broadcast was emulated
by shuffling the two lower i32 elements to the upper two.
We had a bug in the immediate used for the broadcast.
Replacing 0 to 0x44.
0x44 means [01|00|01|00] which corresponds to the correct lane.

Patch by Michael Kuperstein.

llvm-svn: 160430
This commit is contained in:
Nadav Rotem 2012-07-18 08:14:48 +00:00
parent 7f725ae6fe
commit 03d2729392
1 changed files with 8 additions and 6 deletions
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14
lib/Target/X86/X86InstrSSE.td
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@ -7781,11 +7781,12 @@ def : Pat<(v4i32 (X86VBroadcast (loadi32 addr:$src))),
def : Pat<(v4f64 (X86VBroadcast FR64:$src)),
(VINSERTF128rr (INSERT_SUBREG (v4f64 (IMPLICIT_DEF)),
(VPSHUFDri
(INSERT_SUBREG (v2f64 (IMPLICIT_DEF)), FR64:$src, sub_sd), 0),
sub_xmm),
(INSERT_SUBREG (v2f64 (IMPLICIT_DEF)), FR64:$src, sub_sd),
0x44),
sub_xmm),
(VPSHUFDri
(INSERT_SUBREG (v2f64 (IMPLICIT_DEF)), FR64:$src, sub_sd),
0), 1)>;
0x44), 1)>;
def : Pat<(v4i32 (X86VBroadcast GR32:$src)),
(VPSHUFDri
@ -7801,11 +7802,12 @@ def : Pat<(v4i32 (X86VBroadcast (loadi32 addr:$src))),
def : Pat<(v4i64 (X86VBroadcast GR64:$src)),
(VINSERTF128rr (INSERT_SUBREG (v4i64 (IMPLICIT_DEF)),
(VPSHUFDri
(INSERT_SUBREG (v2i64 (IMPLICIT_DEF)), GR64:$src, sub_sd), 0),
sub_xmm),
(INSERT_SUBREG (v2i64 (IMPLICIT_DEF)), GR64:$src, sub_sd),
0x44),
sub_xmm),
(VPSHUFDri
(INSERT_SUBREG (v2i64 (IMPLICIT_DEF)), GR64:$src, sub_sd),
0), 1)>;
0x44), 1)>;
}
}