[llvm] eba638d - [AArch64][GlobalISel] Legalize load <2 x i16>

[Jon Roelofs via llvm-commits]

Author: Jon Roelofs
Date: 2021-07-13T11:12:05-07:00
New Revision: eba638dbbb77ca2a446fd76b4f52ad85640da4f9

URL: https://github.com/llvm/llvm-project/commit/eba638dbbb77ca2a446fd76b4f52ad85640da4f9
DIFF: https://github.com/llvm/llvm-project/commit/eba638dbbb77ca2a446fd76b4f52ad85640da4f9.diff

LOG: [AArch64][GlobalISel] Legalize load <2 x i16>

Differential revision: https://reviews.llvm.org/D105913

Added: 
    

Modified: 
    llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store.mir

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
index 97c27ac8e2ce..26ff1f2f49c2 100644
--- a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
+++ b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
@@ -311,7 +311,8 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST)
       .clampMaxNumElements(0, s16, 8)
       .clampMaxNumElements(0, s32, 4)
       .clampMaxNumElements(0, s64, 2)
-      .customIf(IsPtrVecPred);
+      .customIf(IsPtrVecPred)
+      .scalarizeIf(typeIs(0, v2s16), 0);
 
   getActionDefinitionsBuilder(G_STORE)
       .legalForTypesWithMemDesc({{s8, p0, s8, 8},
@@ -651,6 +652,7 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST)
   getActionDefinitionsBuilder(G_BUILD_VECTOR)
       .legalFor({{v8s8, s8},
                  {v16s8, s8},
+                 {v2s16, s16},
                  {v4s16, s16},
                  {v8s16, s16},
                  {v2s32, s32},

diff  --git a/llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store.mir b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store.mir
index 5428ffda34b7..89e273e12ca4 100644
--- a/llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store.mir
+++ b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store.mir
@@ -565,3 +565,26 @@ body:             |
     RET_ReallyLR
 
 ...
+---
+name:            load_2xi16
+tracksRegLiveness: true
+body:             |
+  bb.1:
+    liveins: $s0, $x0
+
+    ; CHECK-LABEL: name: load_2xi16
+    ; CHECK: liveins: $s0, $x0
+    ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
+    ; CHECK: [[LOAD:%[0-9]+]]:_(s16) = G_LOAD [[COPY]](p0) :: (load (s16), align 4)
+    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 2
+    ; CHECK: [[PTR_ADD:%[0-9]+]]:_(p0) = G_PTR_ADD [[COPY]], [[C]](s64)
+    ; CHECK: [[LOAD1:%[0-9]+]]:_(s16) = G_LOAD [[PTR_ADD]](p0) :: (load (s16) from unknown-address + 2)
+    ; CHECK: [[BUILD_VECTOR:%[0-9]+]]:_(<2 x s16>) = G_BUILD_VECTOR [[LOAD]](s16), [[LOAD1]](s16)
+    ; CHECK: $s0 = COPY [[BUILD_VECTOR]](<2 x s16>)
+    ; CHECK: RET_ReallyLR
+    %0:_(p0) = COPY $x0
+    %1(<2 x s16>) = G_LOAD %0(p0) :: (load (<2 x s16>))
+    $s0 = COPY %1:_(<2 x s16>)
+    RET_ReallyLR
+
+...