1 files changed, 112 insertions, 0 deletions
diff --git a/test/CodeGen/ARM64/misched-basic-A53.ll b/test/CodeGen/ARM64/misched-basic-A53.ll
new file mode 100644
index 0000000000..9f0caa3542
--- /dev/null
+++ b/test/CodeGen/ARM64/misched-basic-A53.ll
@@ -0,0 +1,112 @@
+; REQUIRES: asserts
+; RUN: llc < %s -mtriple=arm64-linux-gnu -mcpu=cortex-a53 -pre-RA-sched=source -enable-misched -verify-misched -debug-only=misched -o - 2>&1 > /dev/null | FileCheck %s
+;
+; The Cortex-A53 machine model will cause the MADD instruction to be scheduled
+; much higher than the ADD instructions in order to hide latency. When not
+; specifying a subtarget, the MADD will remain near the end of the block.
+;
+; CHECK: ********** MI Scheduling **********
+; CHECK: main
+; CHECK: *** Final schedule for BB#2 ***
+; CHECK: SU(13)
+; CHECK: MADDWrrr
+; CHECK: SU(4)
+; CHECK: ADDWri
+; CHECK: ********** INTERVALS **********
+@main.x = private unnamed_addr constant [8 x i32] [i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1], align 4
+@main.y = private unnamed_addr constant [8 x i32] [i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2], align 4
+
+; Function Attrs: nounwind
+define i32 @main() #0 {
+entry:
+  %retval = alloca i32, align 4
+  %x = alloca [8 x i32], align 4
+  %y = alloca [8 x i32], align 4
+  %i = alloca i32, align 4
+  %xx = alloca i32, align 4
+  %yy = alloca i32, align 4
+  store i32 0, i32* %retval
+  %0 = bitcast [8 x i32]* %x to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast ([8 x i32]* @main.x to i8*), i64 32, i32 4, i1 false)
+  %1 = bitcast [8 x i32]* %y to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* bitcast ([8 x i32]* @main.y to i8*), i64 32, i32 4, i1 false)
+  store i32 0, i32* %xx, align 4
+  store i32 0, i32* %yy, align 4
+  store i32 0, i32* %i, align 4
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.inc, %entry
+  %2 = load i32* %i, align 4
+  %cmp = icmp slt i32 %2, 8
+  br i1 %cmp, label %for.body, label %for.end
+
+for.body:                                         ; preds = %for.cond
+  %3 = load i32* %i, align 4
+  %idxprom = sext i32 %3 to i64
+  %arrayidx = getelementptr inbounds [8 x i32]* %x, i32 0, i64 %idxprom
+  %4 = load i32* %arrayidx, align 4
+  %add = add nsw i32 %4, 1
+  store i32 %add, i32* %xx, align 4
+  %5 = load i32* %xx, align 4
+  %add1 = add nsw i32 %5, 12
+  store i32 %add1, i32* %xx, align 4
+  %6 = load i32* %xx, align 4
+  %add2 = add nsw i32 %6, 23
+  store i32 %add2, i32* %xx, align 4
+  %7 = load i32* %xx, align 4
+  %add3 = add nsw i32 %7, 34
+  store i32 %add3, i32* %xx, align 4
+  %8 = load i32* %i, align 4
+  %idxprom4 = sext i32 %8 to i64
+  %arrayidx5 = getelementptr inbounds [8 x i32]* %y, i32 0, i64 %idxprom4
+  %9 = load i32* %arrayidx5, align 4
+  %10 = load i32* %yy, align 4
+  %mul = mul nsw i32 %10, %9
+  store i32 %mul, i32* %yy, align 4
+  br label %for.inc
+
+for.inc:                                          ; preds = %for.body
+  %11 = load i32* %i, align 4
+  %inc = add nsw i32 %11, 1
+  store i32 %inc, i32* %i, align 4
+  br label %for.cond
+
+for.end:                                          ; preds = %for.cond
+  %12 = load i32* %xx, align 4
+  %13 = load i32* %yy, align 4
+  %add6 = add nsw i32 %12, %13
+  ret i32 %add6
+}
+
+
+; The Cortex-A53 machine model will cause the FDIVvvv_42 to be raised to
+; hide latency. Whereas normally there would only be a single FADDvvv_4s
+; after it, this test checks to make sure there are more than one.
+;
+; CHECK: ********** MI Scheduling **********
+; CHECK: neon4xfloat:BB#0
+; CHECK: *** Final schedule for BB#0 ***
+; CHECK: FDIVv4f32
+; CHECK: FADDv4f32
+; CHECK: FADDv4f32
+; CHECK: ********** INTERVALS **********
+define <4 x float> @neon4xfloat(<4 x float> %A, <4 x float> %B) {
+        %tmp1 = fadd <4 x float> %A, %B;
+        %tmp2 = fadd <4 x float> %A, %tmp1;
+        %tmp3 = fadd <4 x float> %A, %tmp2;
+        %tmp4 = fadd <4 x float> %A, %tmp3;
+        %tmp5 = fadd <4 x float> %A, %tmp4;
+        %tmp6 = fadd <4 x float> %A, %tmp5;
+        %tmp7 = fadd <4 x float> %A, %tmp6;
+        %tmp8 = fadd <4 x float> %A, %tmp7;
+        %tmp9 = fdiv <4 x float> %A, %B;
+        %tmp10 = fadd <4 x float> %tmp8, %tmp9;
+
+        ret <4 x float> %tmp10
+}
+
+; Function Attrs: nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #1
+
+attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind }