[ARM][NFC] Move smlad tests

Created a test/CodeGen/ARM/ParallelDSP folder.

llvm-svn: 355907

1 files changed, 48 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/ParallelDSP/smlad4.ll b/llvm/test/CodeGen/ARM/ParallelDSP/smlad4.ll
new file mode 100644
index 00000000000..20571e3c24a
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/ParallelDSP/smlad4.ll
@@ -0,0 +1,48 @@
+; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m33 < %s -arm-parallel-dsp -S | FileCheck %s
+;
+; The loads are not narrow loads: check that the rewrite isn't triggered.
+;
+; CHECK-NOT:  call i32 @llvm.arm.smlad
+;
+; Arg2 is now an i32, while Arg3 is still and i16:
+;
+define dso_local i32 @test(i32 %arg, i32* nocapture readnone %arg1, i32* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
+entry:
+  %cmp22 = icmp sgt i32 %arg, 0
+  br i1 %cmp22, label %for.body.preheader, label %for.cond.cleanup
+
+for.body.preheader:
+  %.pre = load i16, i16* %arg3, align 2
+  br label %for.body
+
+for.cond.cleanup:
+  %mac1.0.lcssa = phi i32 [ 0, %entry ], [ %add9, %for.body ]
+  ret i32 %mac1.0.lcssa
+
+for.body:
+  %0 = phi i16 [ %1, %for.body ], [ %.pre, %for.body.preheader ]
+  %mac1.024 = phi i32 [ %add9, %for.body ], [ 0, %for.body.preheader ]
+  %i.023 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
+  %add = add nuw nsw i32 %i.023, 1
+  %arrayidx1 = getelementptr inbounds i16, i16* %arg3, i32 %add
+  %1 = load i16, i16* %arrayidx1, align 2
+  %conv = sext i16 %0 to i32
+
+; This is a 'normal' i32 load to %2:
+  %arrayidx3 = getelementptr inbounds i32, i32* %arg2, i32 %i.023
+  %2 = load i32, i32* %arrayidx3, align 4
+
+; This mul has now 1 operand which is a narrow load, and the other a normal
+; i32 load:
+  %mul = mul nsw i32 %2, %conv
+
+  %add4 = add nuw nsw i32 %i.023, 2
+  %arrayidx5 = getelementptr inbounds i32, i32* %arg2, i32 %add4
+  %3 = load i32, i32* %arrayidx5, align 4
+  %conv6 = sext i16 %1 to i32
+  %mul7 = mul nsw i32 %3, %conv6
+  %add8 = add i32 %mul, %mac1.024
+  %add9 = add i32 %add8, %mul7
+  %exitcond = icmp eq i32 %add, %arg
+  br i1 %exitcond, label %for.cond.cleanup, label %for.body
+}