Missing reduction detection test cases

llvm-svn: 211235

polly/test/ScopInfo/reduction_only_reduction_like_access.ll

@@ -0,0 +1,35 @@
+; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
+;
+; CHECK: Reduction like: 0
+;
+; void f(int *sum) {
+;   for (int i = 0; i < 100; i++)
+;     sum[i] = sum[99-i] + i;
+; }
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
+
+define void @f(i32* %sum) {
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.inc, %entry
+  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
+  %exitcond = icmp ne i32 %i.0, 100
+  br i1 %exitcond, label %for.body, label %for.end
+
+for.body:                                         ; preds = %for.cond
+  %sub = sub nsw i32 99, %i.0
+  %arrayidx = getelementptr inbounds i32* %sum, i32 %sub
+  %tmp = load i32* %arrayidx, align 4
+  %add = add nsw i32 %tmp, %i.0
+  %arrayidx1 = getelementptr inbounds i32* %sum, i32 %i.0
+  store i32 %add, i32* %arrayidx1, align 4
+  br label %for.inc
+
+for.inc:                                          ; preds = %for.body
+  %inc = add nsw i32 %i.0, 1
+  br label %for.cond
+
+for.end:                                          ; preds = %for.cond
+  ret void
+}

polly/test/ScopInfo/reduction_simple_fp.ll

@@ -0,0 +1,64 @@
+; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
+;
+; CHECK: Function: f_no_fast_math
+; CHECK: Reduction like: 0
+; CHECK: Function: f_fast_math
+; CHECK: Reduction like: 1
+;
+; void f(float *sum) {
+;   for (int i = 0; i < 100; i++)
+;     *sum += 3.41 * i;
+; }
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
+
+define void @f_no_fast_math(float* %sum) {
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.inc, %entry
+  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
+  %exitcond = icmp ne i32 %i.0, 100
+  br i1 %exitcond, label %for.body, label %for.end
+
+for.body:                                         ; preds = %for.cond
+  %conv = sitofp i32 %i.0 to float
+  %pi = fptrunc double 3.41 to float
+  %mul = fmul float %conv, %pi
+  %tmp = load float* %sum, align 4
+  %add = fadd float %tmp, %mul
+  store float %add, float* %sum, align 4
+  br label %for.inc
+
+for.inc:                                          ; preds = %for.body
+  %inc = add nsw i32 %i.0, 1
+  br label %for.cond
+
+for.end:                                          ; preds = %for.cond
+  ret void
+}
+
+define void @f_fast_math(float* %sum) {
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.inc, %entry
+  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
+  %exitcond = icmp ne i32 %i.0, 100
+  br i1 %exitcond, label %for.body, label %for.end
+
+for.body:                                         ; preds = %for.cond
+  %conv = sitofp i32 %i.0 to float
+  %pi = fptrunc double 3.41 to float
+  %mul = fmul fast float %conv, %pi
+  %tmp = load float* %sum, align 4
+  %add = fadd fast float %tmp, %mul
+  store float %add, float* %sum, align 4
+  br label %for.inc
+
+for.inc:                                          ; preds = %for.body
+  %inc = add nsw i32 %i.0, 1
+  br label %for.cond
+
+for.end:                                          ; preds = %for.cond
+  ret void
+}

polly/test/ScopInfo/reduction_simple_w_constant.ll

@@ -0,0 +1,26 @@
+; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
+;
+; CHECK: Reduction like: 1
+;
+; void f(int *sum) {
+;   for (int i = 0; i <= 100; i++)
+;     sum += 3;
+; }
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
+
+define void @f(i32* %sum) {
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.cond, %entry
+  %i1.0 = phi i32 [ 0, %entry ], [ %inc, %for.cond ]
+  %sum.reload = load i32* %sum
+  %add = add nsw i32 %sum.reload, 3
+  %inc = add nsw i32 %i1.0, 1
+  store i32 %add, i32* %sum
+  %cmp = icmp slt i32 %i1.0, 100
+  br i1 %cmp, label %for.cond, label %for.end
+
+for.end:                                          ; preds = %for.cond
+  ret void
+}

polly/test/ScopInfo/reduction_simple_w_iv.ll

@@ -0,0 +1,27 @@
+; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
+;
+; CHECK: Reduction like: 1
+;
+; void f(int* sum) {
+;   for (int i = 0; i <= 100; i++)
+;     sum += i * 3;
+; }
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
+
+define void @f(i32* %sum) {
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.cond, %entr
+  %i1.0 = phi i32 [ 0, %entry ], [ %inc, %for.cond ]
+  %sum.reload = load i32* %sum
+  %mul = mul nsw i32 %i1.0, 3
+  %add = add nsw i32 %sum.reload, %mul
+  %inc = add nsw i32 %i1.0, 1
+  store i32 %add, i32* %sum
+  %cmp = icmp slt i32 %i1.0, 100
+  br i1 %cmp, label %for.cond, label %for.end
+
+for.end:                                          ; preds = %for.cond
+  ret void
+}