1 files changed, 173 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/ParallelDSP/smlald0.ll b/llvm/test/CodeGen/ARM/ParallelDSP/smlald0.ll
new file mode 100644
index 00000000000..97177366d56
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/ParallelDSP/smlald0.ll
@@ -0,0 +1,173 @@
+; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m33 < %s -arm-parallel-dsp -S | FileCheck %s
+;
+; The Cortex-M0 does not support unaligned accesses:
+; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m0 < %s -arm-parallel-dsp -S | FileCheck %s --check-prefix=CHECK-UNSUPPORTED
+;
+; Check DSP extension:
+; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m33 -mattr=-dsp < %s -arm-parallel-dsp -S | FileCheck %s --check-prefix=CHECK-UNSUPPORTED
+
+define dso_local i64 @OneReduction(i32 %arg, i32* nocapture readnone %arg1, i16* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
+;
+; CHECK-LABEL: @OneReduction
+; CHECK:  %mac1{{\.}}026 = phi i64 [ [[V8:%[0-9]+]], %for.body ], [ 0, %for.body.preheader ]
+; CHECK:  [[V4:%[0-9]+]] = bitcast i16* %arrayidx3 to i32*
+; CHECK:  [[V5:%[0-9]+]] = load i32, i32* [[V4]], align 2
+; CHECK:  [[V6:%[0-9]+]] = bitcast i16* %arrayidx to i32*
+; CHECK:  [[V7:%[0-9]+]] = load i32, i32* [[V6]], align 2
+; CHECK:  [[V8]] = call i64 @llvm.arm.smlald(i32 [[V5]], i32 [[V7]], i64 %mac1{{\.}}026)
+; CHECK-NOT: call i64 @llvm.arm.smlald
+;
+; CHECK-UNSUPPORTED-NOT:  call i64 @llvm.arm.smlald
+;
+entry:
+  %cmp24 = icmp sgt i32 %arg, 0
+  br i1 %cmp24, label %for.body.preheader, label %for.cond.cleanup
+
+for.body.preheader:
+  %.pre = load i16, i16* %arg3, align 2
+  %.pre27 = load i16, i16* %arg2, align 2
+  br label %for.body
+
+for.cond.cleanup:
+  %mac1.0.lcssa = phi i64 [ 0, %entry ], [ %add11, %for.body ]
+  ret i64 %mac1.0.lcssa
+
+for.body:
+; One reduction statement here:
+  %mac1.026 = phi i64 [ %add11, %for.body ], [ 0, %for.body.preheader ]
+
+  %i.025 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
+  %arrayidx = getelementptr inbounds i16, i16* %arg3, i32 %i.025
+  %0 = load i16, i16* %arrayidx, align 2
+  %add = add nuw nsw i32 %i.025, 1
+  %arrayidx1 = getelementptr inbounds i16, i16* %arg3, i32 %add
+  %1 = load i16, i16* %arrayidx1, align 2
+  %arrayidx3 = getelementptr inbounds i16, i16* %arg2, i32 %i.025
+  %2 = load i16, i16* %arrayidx3, align 2
+  %conv = sext i16 %2 to i64
+  %conv4 = sext i16 %0 to i64
+  %mul = mul nsw i64 %conv, %conv4
+  %arrayidx6 = getelementptr inbounds i16, i16* %arg2, i32 %add
+  %3 = load i16, i16* %arrayidx6, align 2
+  %conv7 = sext i16 %3 to i64
+  %conv8 = sext i16 %1 to i64
+  %mul9 = mul nsw i64 %conv7, %conv8
+  %add10 = add i64 %mul, %mac1.026
+
+; Here the Mul is the LHS, and the Add the RHS.
+  %add11 = add i64 %mul9, %add10
+
+  %exitcond = icmp ne i32 %add, %arg
+  br i1 %exitcond, label %for.body, label %for.cond.cleanup
+}
+
+define dso_local arm_aapcs_vfpcc i64 @TwoReductions(i32 %arg, i32* nocapture readnone %arg1, i16* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
+;
+; CHECK-LABEL: @TwoReductions
+;
+; CHECK:  %mac1{{\.}}058 = phi i64 [ [[V10:%[0-9]+]], %for.body ], [ 0, %for.body.preheader ]
+; CHECK:  %mac2{{\.}}057 = phi i64 [ [[V17:%[0-9]+]], %for.body ], [ 0, %for.body.preheader ]
+; CHECK:  [[V10]] = call i64 @llvm.arm.smlald(i32 %{{.*}}, i32 %{{.*}}, i64 %mac1{{\.}}058)
+; CHECK:  [[V17]] = call i64 @llvm.arm.smlald(i32 %{{.*}}, i32 %{{.*}}, i64 %mac2{{\.}}057)
+; CHECK-NOT: call i64 @llvm.arm.smlald
+;
+entry:
+  %cmp55 = icmp sgt i32 %arg, 0
+  br i1 %cmp55, label %for.body.preheader, label %for.cond.cleanup
+
+for.cond.cleanup:
+  %mac2.0.lcssa = phi i64 [ 0, %entry ], [ %add28, %for.body ]
+  %mac1.0.lcssa = phi i64 [ 0, %entry ], [ %add16, %for.body ]
+  %add30 = add nsw i64 %mac1.0.lcssa, %mac2.0.lcssa
+  ret i64 %add30
+
+for.body.preheader:
+  br label %for.body
+
+for.body:
+; And two reduction statements here:
+  %mac1.058 = phi i64 [ %add16, %for.body ], [ 0, %for.body.preheader ]
+  %mac2.057 = phi i64 [ %add28, %for.body ], [ 0, %for.body.preheader ]
+
+  %i.056 = phi i32 [ %add29, %for.body ], [ 0, %for.body.preheader ]
+  %arrayidx = getelementptr inbounds i16, i16* %arg3, i32 %i.056
+  %0 = load i16, i16* %arrayidx, align 2
+  %add1 = or i32 %i.056, 1
+  %arrayidx2 = getelementptr inbounds i16, i16* %arg3, i32 %add1
+  %1 = load i16, i16* %arrayidx2, align 2
+  %add3 = or i32 %i.056, 2
+  %arrayidx4 = getelementptr inbounds i16, i16* %arg3, i32 %add3
+  %2 = load i16, i16* %arrayidx4, align 2
+
+  %add5 = or i32 %i.056, 3
+  %arrayidx6 = getelementptr inbounds i16, i16* %arg3, i32 %add5
+  %3 = load i16, i16* %arrayidx6, align 2
+  %arrayidx8 = getelementptr inbounds i16, i16* %arg2, i32 %i.056
+  %4 = load i16, i16* %arrayidx8, align 2
+  %conv = sext i16 %4 to i64
+  %conv9 = sext i16 %0 to i64
+  %mul = mul nsw i64 %conv, %conv9
+  %arrayidx11 = getelementptr inbounds i16, i16* %arg2, i32 %add1
+  %5 = load i16, i16* %arrayidx11, align 2
+  %conv12 = sext i16 %5 to i64
+  %conv13 = sext i16 %1 to i64
+  %mul14 = mul nsw i64 %conv12, %conv13
+  %add15 = add i64 %mul, %mac1.058
+  %add16 = add i64 %add15, %mul14
+  %arrayidx18 = getelementptr inbounds i16, i16* %arg2, i32 %add3
+  %6 = load i16, i16* %arrayidx18, align 2
+  %conv19 = sext i16 %6 to i64
+  %conv20 = sext i16 %2 to i64
+  %mul21 = mul nsw i64 %conv19, %conv20
+  %arrayidx23 = getelementptr inbounds i16, i16* %arg2, i32 %add5
+  %7 = load i16, i16* %arrayidx23, align 2
+  %conv24 = sext i16 %7 to i64
+  %conv25 = sext i16 %3 to i64
+  %mul26 = mul nsw i64 %conv24, %conv25
+  %add27 = add i64 %mul21, %mac2.057
+  %add28 = add i64 %add27, %mul26
+  %add29 = add nuw nsw i32 %i.056, 4
+  %cmp = icmp slt i32 %add29, %arg
+  br i1 %cmp, label %for.body, label %for.cond.cleanup
+}
+
+define i64 @reduction_zext(i32 %arg, i32* nocapture readnone %arg1, i16* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
+; CHECK-LABEL: @reduction_zext
+; CHECK-NOT: call i64 @llvm.arm.smlald
+; CHECK-NOT: call i32 @llvm.arm.smlad
+entry:
+  %cmp24 = icmp sgt i32 %arg, 0
+  br i1 %cmp24, label %for.body.preheader, label %for.cond.cleanup
+
+for.body.preheader:
+  %.pre = load i16, i16* %arg3, align 2
+  %.pre27 = load i16, i16* %arg2, align 2
+  br label %for.body
+
+for.cond.cleanup:
+  %mac1.0.lcssa = phi i64 [ 0, %entry ], [ %add11, %for.body ]
+  ret i64 %mac1.0.lcssa
+
+for.body:
+  %mac1.026 = phi i64 [ %add11, %for.body ], [ 0, %for.body.preheader ]
+  %i.025 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
+  %arrayidx = getelementptr inbounds i16, i16* %arg3, i32 %i.025
+  %0 = load i16, i16* %arrayidx, align 2
+  %add = add nuw nsw i32 %i.025, 1
+  %arrayidx1 = getelementptr inbounds i16, i16* %arg3, i32 %add
+  %1 = load i16, i16* %arrayidx1, align 2
+  %arrayidx3 = getelementptr inbounds i16, i16* %arg2, i32 %i.025
+  %2 = load i16, i16* %arrayidx3, align 2
+  %conv = sext i16 %2 to i64
+  %conv4 = zext i16 %0 to i64
+  %mul = mul nsw i64 %conv, %conv4
+  %arrayidx6 = getelementptr inbounds i16, i16* %arg2, i32 %add
+  %3 = load i16, i16* %arrayidx6, align 2
+  %conv7 = sext i16 %3 to i64
+  %conv8 = zext i16 %1 to i64
+  %mul9 = mul nsw i64 %conv7, %conv8
+  %add10 = add i64 %mul, %mac1.026
+  %add11 = add i64 %mul9, %add10
+  %exitcond = icmp ne i32 %add, %arg
+  br i1 %exitcond, label %for.body, label %for.cond.cleanup
+}