[ARM] FP16: support vld1.16 for vector loads with post-increment
Differential Revision: https://reviews.llvm.org/D55112
llvm-svn: 348110
diff --git a/llvm/test/CodeGen/ARM/fp16-vld.ll b/llvm/test/CodeGen/ARM/fp16-vld.ll
new file mode 100644
index 0000000..5052b99
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/fp16-vld.ll
@@ -0,0 +1,48 @@
+; RUN: llc -asm-verbose=false < %s | FileCheck %s
+
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
+target triple = "armv8.2a-arm-unknown-eabihf"
+
+define dso_local void @vec8(half* nocapture readonly %V, i32 %N) local_unnamed_addr #0 {
+; CHECK: .LBB0_1:
+; CHECK-NEXT: vld1.16 {d16, d17}, [r0]!
+; CHECK-NEXT: subs r1, r1, #8
+; CHECK-NEXT: bne .LBB0_1
+entry:
+ br label %vector.body
+
+vector.body:
+ %index = phi i32 [ 0, %entry ], [ %index.next, %vector.body ]
+ %0 = getelementptr inbounds half, half* %V, i32 %index
+ %1 = bitcast half* %0 to <8 x half>*
+ %wide.load = load volatile <8 x half>, <8 x half>* %1, align 2
+ %index.next = add i32 %index, 8
+ %cmp = icmp eq i32 %index.next, %N
+ br i1 %cmp, label %byeblock, label %vector.body
+
+byeblock:
+ ret void
+}
+
+define dso_local void @vec4(half* nocapture readonly %V, i32 %N) local_unnamed_addr #0 {
+; CHECK: .LBB1_1:
+; CHECK-NEXT: vld1.16 {d16}, [r0]!
+; CHECK-NEXT: subs r1, r1, #4
+; CHECK-NEXT: bne .LBB1_1
+entry:
+ br label %vector.body
+
+vector.body:
+ %index = phi i32 [ 0, %entry ], [ %index.next, %vector.body ]
+ %0 = getelementptr inbounds half, half* %V, i32 %index
+ %1 = bitcast half* %0 to <4 x half>*
+ %wide.load = load volatile <4 x half>, <4 x half>* %1, align 2
+ %index.next = add i32 %index, 4
+ %cmp = icmp eq i32 %index.next, %N
+ br i1 %cmp, label %byeblock, label %vector.body
+
+byeblock:
+ ret void
+}
+
+attributes #0 = { norecurse nounwind readonly "no-infs-fp-math"="true" "no-nans-fp-math"="true" "no-signed-zeros-fp-math"="true" "no-trapping-math"="true" "target-cpu"="generic" "target-features"="+armv8.2-a,+fullfp16,+strict-align,-thumb-mode" "unsafe-fp-math"="true" "use-soft-float"="false" }