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| author | Chris Lattner <sabre@nondot.org> | 2008-04-10 05:13:43 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-04-10 05:13:43 +0000 |
| commit | db66750753de3f6da8b4a3728dcbebb551f1328e (patch) | |
| tree | 4a745fcf128def111ba4157cfd3c622741c33022 | |
| parent | 3dc2e96eec566f8c4e88a34296d6f10b840d7d1e (diff) | |
| download | external_llvm-db66750753de3f6da8b4a3728dcbebb551f1328e.zip external_llvm-db66750753de3f6da8b4a3728dcbebb551f1328e.tar.gz external_llvm-db66750753de3f6da8b4a3728dcbebb551f1328e.tar.bz2 | |
Fix the x86-64 side of PR2108 by adding a v2f64 version of
MOVZQI2PQIrr. This would be better handled as a dag combine
(with the goal of eliminating the bitconvert) but I don't know
how to do that safely. Thoughts welcome.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49463 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86InstrSSE.td | 10 | ||||
| -rw-r--r-- | test/CodeGen/X86/vec_shuffle-17.ll | 13 |
2 files changed, 23 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index dbc04b0..442847c 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -2305,6 +2305,16 @@ def MOVZQI2PQIrr : RPDI<0x6E, MRMSrcReg, (outs VR128:$dst), (ins GR64:$src), MOVL_shuffle_mask)))]>; } +// Handle the v2f64 form of 'MOVZQI2PQIrr' for PR2108. FIXME: this would be +// better written as a dag combine xform. +let AddedComplexity = 15 in +def : Pat<(v2f64 (vector_shuffle immAllZerosV_bc, + (v2f64 (scalar_to_vector + (f64 (bitconvert GR64:$src)))), + MOVL_shuffle_mask)), + (MOVZQI2PQIrr GR64:$src)>, Requires<[HasSSE3]>; + + let AddedComplexity = 20 in { def MOVZDI2PDIrm : PDI<0x6E, MRMSrcMem, (outs VR128:$dst), (ins i32mem:$src), "movd\t{$src, $dst|$dst, $src}", diff --git a/test/CodeGen/X86/vec_shuffle-17.ll b/test/CodeGen/X86/vec_shuffle-17.ll new file mode 100644 index 0000000..992d791 --- /dev/null +++ b/test/CodeGen/X86/vec_shuffle-17.ll @@ -0,0 +1,13 @@ +; RUN: llvm-as < %s | llc -march=x86-64 | grep {movd.*%rdi, %xmm0} +; RUN: llvm-as < %s | llc -march=x86-64 | not grep xor +; PR2108 + +define <2 x i64> @doload64(i64 %x) nounwind { +entry: + %tmp717 = bitcast i64 %x to double ; <double> [#uses=1] + %tmp8 = insertelement <2 x double> undef, double %tmp717, i32 0 ; <<2 x double>> [#uses=1] + %tmp9 = insertelement <2 x double> %tmp8, double 0.000000e+00, i32 1 ; <<2 x double>> [#uses=1] + %tmp11 = bitcast <2 x double> %tmp9 to <2 x i64> ; <<2 x i64>> [#uses=1] + ret <2 x i64> %tmp11 +} + |