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Diffstat (limited to 'test/Transforms/LoopVectorize/phi-cost.ll')
-rw-r--r-- | test/Transforms/LoopVectorize/phi-cost.ll | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/phi-cost.ll b/test/Transforms/LoopVectorize/phi-cost.ll new file mode 100644 index 000000000000..5ccea66c76af --- /dev/null +++ b/test/Transforms/LoopVectorize/phi-cost.ll @@ -0,0 +1,86 @@ +; REQUIRES: asserts +; RUN: opt < %s -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -instcombine -debug-only=loop-vectorize -disable-output -print-after=instcombine 2>&1 | FileCheck %s + +target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" + +; CHECK-LABEL: phi_two_incoming_values +; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ] +; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %tmp5 = phi i32 [ %tmp1, %for.body ], [ %tmp4, %if.then ] +; CHECK: vector.body: +; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ] +; CHECK: [[WIDE_LOAD:%.*]] = load <2 x i32>, <2 x i32>* {{.*}} +; CHECK: [[TMP5:%.*]] = icmp sgt <2 x i32> [[WIDE_LOAD]], zeroinitializer +; CHECK-NEXT: [[TMP6:%.*]] = add <2 x i32> [[WIDE_LOAD]], <i32 1, i32 1> +; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP5]], <2 x i32> [[TMP6]], <2 x i32> [[WIDE_LOAD]] +; CHECK: store <2 x i32> [[PREDPHI]], <2 x i32>* {{.*}} +; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2 +; +define void @phi_two_incoming_values(i32* %a, i32* %b, i64 %n) { +entry: + br label %for.body + +for.body: + %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ] + %tmp0 = getelementptr inbounds i32, i32* %a, i64 %i + %tmp1 = load i32, i32* %tmp0, align 4 + %tmp2 = getelementptr inbounds i32, i32* %b, i64 %i + %tmp3 = icmp sgt i32 %tmp1, 0 + br i1 %tmp3, label %if.then, label %if.end + +if.then: + %tmp4 = add i32 %tmp1, 1 + br label %if.end + +if.end: + %tmp5 = phi i32 [ %tmp1, %for.body ], [ %tmp4, %if.then ] + store i32 %tmp5, i32* %tmp2, align 4 + %i.next = add i64 %i, 1 + %cond = icmp eq i64 %i, %n + br i1 %cond, label %for.end, label %for.body + +for.end: + ret void +} + +; CHECK-LABEL: phi_three_incoming_values +; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ] +; CHECK: LV: Found an estimated cost of 2 for VF 2 For instruction: %tmp8 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %tmp7, %if.else ] +; CHECK: vector.body: +; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ] +; CHECK: [[PREDPHI:%.*]] = select <2 x i1> {{.*}}, <2 x i32> <i32 3, i32 3>, <2 x i32> <i32 9, i32 9> +; CHECK: [[PREDPHI7:%.*]] = select <2 x i1> {{.*}}, <2 x i32> {{.*}}, <2 x i32> [[PREDPHI]] +; CHECK: store <2 x i32> [[PREDPHI7]], <2 x i32>* {{.*}} +; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2 +; +define void @phi_three_incoming_values(i32* %a, i32* %b, i64 %n) { +entry: + br label %for.body + +for.body: + %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ] + %tmp0 = getelementptr inbounds i32, i32* %a, i64 %i + %tmp1 = load i32, i32* %tmp0, align 4 + %tmp2 = getelementptr inbounds i32, i32* %b, i64 %i + %tmp3 = load i32, i32* %tmp2, align 4 + %tmp4 = icmp sgt i32 %tmp1, %tmp3 + br i1 %tmp4, label %if.then, label %if.end + +if.then: + %tmp5 = icmp sgt i32 %tmp1, 19 + br i1 %tmp5, label %if.end, label %if.else + +if.else: + %tmp6 = icmp slt i32 %tmp3, 4 + %tmp7 = select i1 %tmp6, i32 4, i32 5 + br label %if.end + +if.end: + %tmp8 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %tmp7, %if.else ] + store i32 %tmp8, i32* %tmp0, align 4 + %i.next = add i64 %i, 1 + %cond = icmp eq i64 %i, %n + br i1 %cond, label %for.end, label %for.body + +for.end: + ret void +} |