[llvm] f3c6c76 - [NFC][X86][LV] Add costmodel test coverage for interleaved i32/f32 load/store stride=3

Roman Lebedev via llvm-commits llvm-commits at lists.llvm.org
Sun Oct 3 06:51:39 PDT 2021


Author: Roman Lebedev
Date: 2021-10-03T16:49:51+03:00
New Revision: f3c6c76cfd0dbb29ec444a1e82e2ce034cad606d

URL: https://github.com/llvm/llvm-project/commit/f3c6c76cfd0dbb29ec444a1e82e2ce034cad606d
DIFF: https://github.com/llvm/llvm-project/commit/f3c6c76cfd0dbb29ec444a1e82e2ce034cad606d.diff

LOG: [NFC][X86][LV] Add costmodel test coverage for interleaved i32/f32 load/store stride=3

Added: 
    llvm/test/Analysis/CostModel/X86/interleaved-load-f32-stride-3.ll
    llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-3.ll
    llvm/test/Analysis/CostModel/X86/interleaved-store-f32-stride-3.ll
    llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-3.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/Analysis/CostModel/X86/interleaved-load-f32-stride-3.ll b/llvm/test/Analysis/CostModel/X86/interleaved-load-f32-stride-3.ll
new file mode 100644
index 0000000000000..946e0246d36a7
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-load-f32-stride-3.ll
@@ -0,0 +1,75 @@
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+sse2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx  --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX1
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx512bw,+avx512vl --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX512
+; REQUIRES: asserts
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+ at A = global [1024 x float] zeroinitializer, align 128
+ at B = global [1024 x i8] zeroinitializer, align 128
+
+; CHECK: LV: Checking a loop in "test"
+;
+; SSE2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; SSE2: LV: Found an estimated cost of 9 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; SSE2: LV: Found an estimated cost of 21 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; SSE2: LV: Found an estimated cost of 42 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+;
+; AVX1: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 12 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 24 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 57 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 114 for VF 16 For instruction:   %v0 = load float, float* %in0, align 4
+;
+; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 12 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 24 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 20 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 114 for VF 16 For instruction:   %v0 = load float, float* %in0, align 4
+;
+; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 6 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 12 for VF 16 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 51 for VF 32 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 210 for VF 64 For instruction:   %v0 = load float, float* %in0, align 4
+;
+; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF {{[0-9]+}} For instruction:   %v0 = load float, float* %in0, align 4
+
+define void @test() {
+entry:
+  br label %for.body
+
+for.body:
+  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
+
+  %iv.0 = add nuw nsw i64 %iv, 0
+  %iv.1 = add nuw nsw i64 %iv, 1
+  %iv.2 = add nuw nsw i64 %iv, 2
+
+  %in0 = getelementptr inbounds [1024 x float], [1024 x float]* @A, i64 0, i64 %iv.0
+  %in1 = getelementptr inbounds [1024 x float], [1024 x float]* @A, i64 0, i64 %iv.1
+  %in2 = getelementptr inbounds [1024 x float], [1024 x float]* @A, i64 0, i64 %iv.2
+
+  %v0 = load float, float* %in0
+  %v1 = load float, float* %in1
+  %v2 = load float, float* %in2
+
+  %reduce.add.0 = fadd float %v0, %v1
+  %reduce.add.1 = fadd float %reduce.add.0, %v2
+
+  %reduce.add.1.narrow = fptoui float %reduce.add.1 to i8
+
+  %out = getelementptr inbounds [1024 x i8], [1024 x i8]* @B, i64 0, i64 %iv.0
+  store i8 %reduce.add.1.narrow, i8* %out
+
+  %iv.next = add nuw nsw i64 %iv.0, 3
+  %cmp = icmp ult i64 %iv.next, 1024
+  br i1 %cmp, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup:
+  ret void
+}

diff  --git a/llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-3.ll b/llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-3.ll
new file mode 100644
index 0000000000000..15f81d4c33ac7
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-3.ll
@@ -0,0 +1,75 @@
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+sse2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx  --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX1
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx512bw,+avx512vl --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX512
+; REQUIRES: asserts
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+ at A = global [1024 x i32] zeroinitializer, align 128
+ at B = global [1024 x i8] zeroinitializer, align 128
+
+; CHECK: LV: Checking a loop in "test"
+;
+; SSE2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i32, i32* %in0, align 4
+; SSE2: LV: Found an estimated cost of 21 for VF 2 For instruction:   %v0 = load i32, i32* %in0, align 4
+; SSE2: LV: Found an estimated cost of 45 for VF 4 For instruction:   %v0 = load i32, i32* %in0, align 4
+; SSE2: LV: Found an estimated cost of 90 for VF 8 For instruction:   %v0 = load i32, i32* %in0, align 4
+;
+; AVX1: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX1: LV: Found an estimated cost of 17 for VF 2 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX1: LV: Found an estimated cost of 30 for VF 4 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX1: LV: Found an estimated cost of 69 for VF 8 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX1: LV: Found an estimated cost of 138 for VF 16 For instruction:   %v0 = load i32, i32* %in0, align 4
+;
+; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX2: LV: Found an estimated cost of 17 for VF 2 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX2: LV: Found an estimated cost of 30 for VF 4 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX2: LV: Found an estimated cost of 20 for VF 8 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX2: LV: Found an estimated cost of 138 for VF 16 For instruction:   %v0 = load i32, i32* %in0, align 4
+;
+; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 2 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 4 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX512: LV: Found an estimated cost of 6 for VF 8 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX512: LV: Found an estimated cost of 12 for VF 16 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX512: LV: Found an estimated cost of 51 for VF 32 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX512: LV: Found an estimated cost of 210 for VF 64 For instruction:   %v0 = load i32, i32* %in0, align 4
+;
+; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF {{[0-9]+}} For instruction:   %v0 = load i32, i32* %in0, align 4
+
+define void @test() {
+entry:
+  br label %for.body
+
+for.body:
+  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
+
+  %iv.0 = add nuw nsw i64 %iv, 0
+  %iv.1 = add nuw nsw i64 %iv, 1
+  %iv.2 = add nuw nsw i64 %iv, 2
+
+  %in0 = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %iv.0
+  %in1 = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %iv.1
+  %in2 = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %iv.2
+
+  %v0 = load i32, i32* %in0
+  %v1 = load i32, i32* %in1
+  %v2 = load i32, i32* %in2
+
+  %reduce.add.0 = add i32 %v0, %v1
+  %reduce.add.1 = add i32 %reduce.add.0, %v2
+
+  %reduce.add.1.narrow = trunc i32 %reduce.add.1 to i8
+
+  %out = getelementptr inbounds [1024 x i8], [1024 x i8]* @B, i64 0, i64 %iv.0
+  store i8 %reduce.add.1.narrow, i8* %out
+
+  %iv.next = add nuw nsw i64 %iv.0, 3
+  %cmp = icmp ult i64 %iv.next, 1024
+  br i1 %cmp, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup:
+  ret void
+}

diff  --git a/llvm/test/Analysis/CostModel/X86/interleaved-store-f32-stride-3.ll b/llvm/test/Analysis/CostModel/X86/interleaved-store-f32-stride-3.ll
new file mode 100644
index 0000000000000..2b3e9f600acb5
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-store-f32-stride-3.ll
@@ -0,0 +1,76 @@
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+sse2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx  --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX1
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx512bw,+avx512vl --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX512
+; REQUIRES: asserts
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+ at A = global [1024 x i8] zeroinitializer, align 128
+ at B = global [1024 x float] zeroinitializer, align 128
+
+; CHECK: LV: Checking a loop in "test"
+;
+; SSE2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v2, float* %out2, align 4
+; SSE2: LV: Found an estimated cost of 11 for VF 2 For instruction:   store float %v2, float* %out2, align 4
+; SSE2: LV: Found an estimated cost of 24 for VF 4 For instruction:   store float %v2, float* %out2, align 4
+; SSE2: LV: Found an estimated cost of 48 for VF 8 For instruction:   store float %v2, float* %out2, align 4
+;
+; AVX1: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v2, float* %out2, align 4
+; AVX1: LV: Found an estimated cost of 13 for VF 2 For instruction:   store float %v2, float* %out2, align 4
+; AVX1: LV: Found an estimated cost of 23 for VF 4 For instruction:   store float %v2, float* %out2, align 4
+; AVX1: LV: Found an estimated cost of 57 for VF 8 For instruction:   store float %v2, float* %out2, align 4
+; AVX1: LV: Found an estimated cost of 114 for VF 16 For instruction:   store float %v2, float* %out2, align 4
+;
+; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v2, float* %out2, align 4
+; AVX2: LV: Found an estimated cost of 13 for VF 2 For instruction:   store float %v2, float* %out2, align 4
+; AVX2: LV: Found an estimated cost of 23 for VF 4 For instruction:   store float %v2, float* %out2, align 4
+; AVX2: LV: Found an estimated cost of 57 for VF 8 For instruction:   store float %v2, float* %out2, align 4
+; AVX2: LV: Found an estimated cost of 114 for VF 16 For instruction:   store float %v2, float* %out2, align 4
+;
+; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v2, float* %out2, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 2 For instruction:   store float %v2, float* %out2, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 4 For instruction:   store float %v2, float* %out2, align 4
+; AVX512: LV: Found an estimated cost of 8 for VF 8 For instruction:   store float %v2, float* %out2, align 4
+; AVX512: LV: Found an estimated cost of 12 for VF 16 For instruction:   store float %v2, float* %out2, align 4
+; AVX512: LV: Found an estimated cost of 24 for VF 32 For instruction:   store float %v2, float* %out2, align 4
+; AVX512: LV: Found an estimated cost of 48 for VF 64 For instruction:   store float %v2, float* %out2, align 4
+;
+; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF {{[0-9]+}} For instruction:   store float %v2, float* %out2, align 4
+
+define void @test() {
+entry:
+  br label %for.body
+
+for.body:
+  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
+
+  %iv.0 = add nuw nsw i64 %iv, 0
+  %iv.1 = add nuw nsw i64 %iv, 1
+  %iv.2 = add nuw nsw i64 %iv, 2
+
+  %in = getelementptr inbounds [1024 x i8], [1024 x i8]* @A, i64 0, i64 %iv.0
+  %v.narrow = load i8, i8* %in
+
+  %v = uitofp i8 %v.narrow to float
+
+  %v0 = fadd float %v, 0.0
+  %v1 = fadd float %v, 1.0
+  %v2 = fadd float %v, 2.0
+
+  %out0 = getelementptr inbounds [1024 x float], [1024 x float]* @B, i64 0, i64 %iv.0
+  %out1 = getelementptr inbounds [1024 x float], [1024 x float]* @B, i64 0, i64 %iv.1
+  %out2 = getelementptr inbounds [1024 x float], [1024 x float]* @B, i64 0, i64 %iv.2
+
+  store float %v0, float* %out0
+  store float %v1, float* %out1
+  store float %v2, float* %out2
+
+  %iv.next = add nuw nsw i64 %iv.0, 3
+  %cmp = icmp ult i64 %iv.next, 1024
+  br i1 %cmp, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup:
+  ret void
+}

diff  --git a/llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-3.ll b/llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-3.ll
new file mode 100644
index 0000000000000..d548e0d1888aa
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-3.ll
@@ -0,0 +1,76 @@
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+sse2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx  --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX1
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx512bw,+avx512vl --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX512
+; REQUIRES: asserts
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+ at A = global [1024 x i8] zeroinitializer, align 128
+ at B = global [1024 x i32] zeroinitializer, align 128
+
+; CHECK: LV: Checking a loop in "test"
+;
+; SSE2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i32 %v2, i32* %out2, align 4
+; SSE2: LV: Found an estimated cost of 23 for VF 2 For instruction:   store i32 %v2, i32* %out2, align 4
+; SSE2: LV: Found an estimated cost of 48 for VF 4 For instruction:   store i32 %v2, i32* %out2, align 4
+; SSE2: LV: Found an estimated cost of 96 for VF 8 For instruction:   store i32 %v2, i32* %out2, align 4
+;
+; AVX1: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX1: LV: Found an estimated cost of 18 for VF 2 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX1: LV: Found an estimated cost of 29 for VF 4 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX1: LV: Found an estimated cost of 69 for VF 8 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX1: LV: Found an estimated cost of 138 for VF 16 For instruction:   store i32 %v2, i32* %out2, align 4
+;
+; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX2: LV: Found an estimated cost of 18 for VF 2 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX2: LV: Found an estimated cost of 29 for VF 4 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX2: LV: Found an estimated cost of 69 for VF 8 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX2: LV: Found an estimated cost of 138 for VF 16 For instruction:   store i32 %v2, i32* %out2, align 4
+;
+; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 2 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX512: LV: Found an estimated cost of 4 for VF 4 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX512: LV: Found an estimated cost of 8 for VF 8 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX512: LV: Found an estimated cost of 12 for VF 16 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX512: LV: Found an estimated cost of 24 for VF 32 For instruction:   store i32 %v2, i32* %out2, align 4
+; AVX512: LV: Found an estimated cost of 48 for VF 64 For instruction:   store i32 %v2, i32* %out2, align 4
+;
+; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF {{[0-9]+}} For instruction:   store i32 %v2, i32* %out2, align 4
+
+define void @test() {
+entry:
+  br label %for.body
+
+for.body:
+  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
+
+  %iv.0 = add nuw nsw i64 %iv, 0
+  %iv.1 = add nuw nsw i64 %iv, 1
+  %iv.2 = add nuw nsw i64 %iv, 2
+
+  %in = getelementptr inbounds [1024 x i8], [1024 x i8]* @A, i64 0, i64 %iv.0
+  %v.narrow = load i8, i8* %in
+
+  %v = zext i8 %v.narrow to i32
+
+  %v0 = add i32 %v, 0
+  %v1 = add i32 %v, 1
+  %v2 = add i32 %v, 2
+
+  %out0 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %iv.0
+  %out1 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %iv.1
+  %out2 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %iv.2
+
+  store i32 %v0, i32* %out0
+  store i32 %v1, i32* %out1
+  store i32 %v2, i32* %out2
+
+  %iv.next = add nuw nsw i64 %iv.0, 3
+  %cmp = icmp ult i64 %iv.next, 1024
+  br i1 %cmp, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup:
+  ret void
+}


        


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