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authorNadav Rotem <nrotem@apple.com>2013-10-25 06:41:18 +0000
committerNadav Rotem <nrotem@apple.com>2013-10-25 06:41:18 +0000
commit97541d400e5011fd8ab5d2eb2a736c301d85b232 (patch)
treea1e0459422209704bdc1e76c3b9613cb4f52418c /lib/Target/AArch64/AArch64InstrNEON.td
parentbe3cf5f3e449ea54785ab49d9f01543b710a5125 (diff)
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Optimize concat_vectors(X, undef) -> scalar_to_vector(X).
This optimization is not SSE specific so I am moving it to DAGco. The new scalar_to_vector dag node exposed a missing pattern in the AArch64 target that I needed to add. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193393 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/AArch64/AArch64InstrNEON.td')
-rw-r--r--lib/Target/AArch64/AArch64InstrNEON.td6
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Target/AArch64/AArch64InstrNEON.td b/lib/Target/AArch64/AArch64InstrNEON.td
index 9efbb0d..10dde19 100644
--- a/lib/Target/AArch64/AArch64InstrNEON.td
+++ b/lib/Target/AArch64/AArch64InstrNEON.td
@@ -5130,6 +5130,10 @@ def : Pat<(v1f64 (scalar_to_vector (f64 FPR64:$Rn))),
def : Pat<(v1f64 (scalar_to_vector (f64 FPR64:$src))),
(FMOVdd $src)>;
+def : Pat<(v2f64 (scalar_to_vector (f64 FPR64:$src))),
+ (INSERT_SUBREG (v2f64 (IMPLICIT_DEF)),
+ (f64 FPR64:$src), sub_64)>;
+
class NeonI_DUP_Elt<bit Q, string asmop, string rdlane, string rnlane,
RegisterOperand ResVPR, ValueType ResTy,
ValueType OpTy, Operand OpImm>
@@ -5300,4 +5304,4 @@ def : Pat<(v1i64 (extract_subvector (v2i64 VPR128:$Rn), (i64 0))),
def : Pat<(v2f32 (extract_subvector (v4f32 VPR128:$Rn), (i64 0))),
(v2f32 (EXTRACT_SUBREG VPR128:$Rn, sub_64))>;
def : Pat<(v1f64 (extract_subvector (v2f64 VPR128:$Rn), (i64 0))),
- (v1f64 (EXTRACT_SUBREG VPR128:$Rn, sub_64))>; \ No newline at end of file
+ (v1f64 (EXTRACT_SUBREG VPR128:$Rn, sub_64))>;