1 ; RUN: opt -march=hexagon -hexagon-loop-idiom -S < %s | FileCheck %s 2 ; REQUIRES: asserts 3 ; 4 ; Check for sane output, this used to crash. 5 ; CHECK: define void @fred 6 7 ; The conversion of shifts from right to left failed, but the return 8 ; code was not checked and the transformation proceeded. 9 10 target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048" 11 target triple = "hexagon" 12 13 @A = common global [256 x i32] zeroinitializer, align 8 14 15 ; Function Attrs: noinline nounwind 16 define void @fred() local_unnamed_addr #0 { 17 b0: 18 br label %b1 19 20 b1: ; preds = %b13, %b0 21 %v2 = phi i32 [ 0, %b0 ], [ %v16, %b13 ] 22 br label %b3 23 24 b3: ; preds = %b3, %b1 25 %v4 = phi i32 [ %v2, %b1 ], [ %v10, %b3 ] 26 %v5 = phi i32 [ 0, %b1 ], [ %v11, %b3 ] 27 %v6 = and i32 %v4, 1 28 %v7 = icmp ne i32 %v6, 0 29 %v8 = lshr i32 %v4, 1 30 %v9 = xor i32 %v8, 123456789 31 %v10 = select i1 %v7, i32 %v9, i32 %v8 32 %v11 = add nuw nsw i32 %v5, 1 33 %v12 = icmp ne i32 %v11, 8 34 br i1 %v12, label %b3, label %b13 35 36 b13: ; preds = %b3 37 %v14 = phi i32 [ %v10, %b3 ] 38 %v15 = getelementptr inbounds [256 x i32], [256 x i32]* @A, i32 0, i32 %v2 39 store i32 %v14, i32* %v15, align 4 40 %v16 = add nuw nsw i32 %v2, 1 41 %v17 = icmp ne i32 %v16, 256 42 br i1 %v17, label %b1, label %b18 43 44 b18: ; preds = %b13 45 ret void 46 } 47 48 attributes #0 = { noinline nounwind "target-cpu"="hexagonv60" } 49
