[polly] r248663 - Add test case for delinearization through bitcasts

[Tobias Grosser via llvm-commits]

Author: grosser
Date: Sat Sep 26 03:55:59 2015
New Revision: 248663

URL: http://llvm.org/viewvc/llvm-project?rev=248663&view=rev
Log:
Add test case for delinearization through bitcasts

This was forgotten in r247928

Added:
    polly/trunk/test/ScopInfo/multidim_with_bitcast.ll

Added: polly/trunk/test/ScopInfo/multidim_with_bitcast.ll
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/test/ScopInfo/multidim_with_bitcast.ll?rev=248663&view=auto
==============================================================================
--- polly/trunk/test/ScopInfo/multidim_with_bitcast.ll (added)
+++ polly/trunk/test/ScopInfo/multidim_with_bitcast.ll Sat Sep 26 03:55:59 2015
@@ -0,0 +1,62 @@
+; RUN: opt %loadPolly -polly-detect-unprofitable -polly-scops -analyze < %s | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+
+; Verify that we can look through a bitcast when delinearizing multi-dimensional
+; arrays.
+
+; CHECK: Stmt_bb7[i0, i1] -> MemRef_B[i0, i1]
+; CHECK: Stmt_bb7[i0, i1] -> MemRef_B[i0, i1]
+; CHECK: Stmt_bb17[i0] -> MemRef_B[i0, 100]
+
+define void @kernel(float* %A, [101 x float]* %B, [101 x float]* %C, float* %D) {
+bb:
+  br label %bb4
+
+bb4:                                              ; preds = %bb21, %bb
+  %indvars.iv1 = phi i64 [ %indvars.iv.next2, %bb21 ], [ 0, %bb ]
+  %exitcond3 = icmp eq i64 %indvars.iv1, 100
+  br i1 %exitcond3, label %bb22, label %bb5
+
+bb5:                                              ; preds = %bb4
+  br label %bb6
+
+bb6:                                              ; preds = %bb16, %bb5
+  %indvars.iv = phi i64 [ %indvars.iv.next, %bb16 ], [ 0, %bb5 ]
+  %exitcond = icmp eq i64 %indvars.iv, 100
+  br i1 %exitcond, label %bb17, label %bb7
+
+bb7:                                              ; preds = %bb6
+  %tmp = getelementptr inbounds float, float* %D, i64 %indvars.iv
+  %tmp8 = load float, float* %tmp, align 4
+  %tmp9 = getelementptr inbounds [101 x float], [101 x float]* %B, i64 %indvars.iv1, i64 %indvars.iv
+  %tmp10 = load float, float* %tmp9, align 4
+  %tmp11 = fmul float %tmp8, %tmp10
+  %tmp12 = getelementptr inbounds [101 x float], [101 x float]* %C, i64 %indvars.iv1, i64 %indvars.iv
+  store float %tmp11, float* %tmp12, align 4
+  %tmp13 = getelementptr inbounds float, float* %A, i64 %indvars.iv
+  %0 = bitcast float* %tmp13 to i32*
+  %tmp141 = load i32, i32* %0, align 4
+  %tmp15 = getelementptr inbounds [101 x float], [101 x float]* %B, i64 %indvars.iv1, i64 %indvars.iv
+  %1 = bitcast float* %tmp15 to i32*
+  store i32 %tmp141, i32* %1, align 4
+  br label %bb16
+
+bb16:                                             ; preds = %bb7
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+  br label %bb6
+
+bb17:                                             ; preds = %bb6
+  %tmp18 = trunc i64 %indvars.iv1 to i32
+  %tmp19 = sitofp i32 %tmp18 to float
+  %tmp20 = getelementptr inbounds [101 x float], [101 x float]* %B, i64 %indvars.iv1, i64 100
+  store float %tmp19, float* %tmp20, align 4
+  br label %bb21
+
+bb21:                                             ; preds = %bb17
+  %indvars.iv.next2 = add nuw nsw i64 %indvars.iv1, 1
+  br label %bb4
+
+bb22:                                             ; preds = %bb4
+  ret void
+}