1 ; RUN: opt < %s -scalar-evolution -analyze | FileCheck %s 2 3 ; ScalarEvolution can't compute a trip count because it doesn't know if 4 ; dividing by the stride will have a remainder. This could theoretically 5 ; be teaching it how to use a more elaborate trip count computation. 6 7 ; CHECK: Loop %bb3.i: backedge-taken count is ((64 + (-64 smax (-1 + (-1 * %0))) + %0) /u 64) 8 ; CHECK: Loop %bb3.i: max backedge-taken count is 33554431 9 10 %struct.FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct.FILE*, i32, i32, i64, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i64, i32, [20 x i8] } 11 %struct.SHA_INFO = type { [5 x i32], i32, i32, [16 x i32] } 12 %struct._IO_marker = type { %struct._IO_marker*, %struct.FILE*, i32 } 13 14 @_2E_str = external constant [26 x i8] 15 @stdin = external global %struct.FILE* 16 @_2E_str1 = external constant [3 x i8] 17 @_2E_str12 = external constant [30 x i8] 18 19 declare void @sha_init(%struct.SHA_INFO* nocapture) nounwind 20 21 declare fastcc void @sha_transform(%struct.SHA_INFO* nocapture) nounwind 22 23 declare void @sha_print(%struct.SHA_INFO* nocapture) nounwind 24 25 declare i32 @printf(i8* nocapture, ...) nounwind 26 27 declare void @sha_final(%struct.SHA_INFO* nocapture) nounwind 28 29 declare void @sha_update(%struct.SHA_INFO* nocapture, i8* nocapture, i32) nounwind 30 31 declare i64 @fread(i8* noalias nocapture, i64, i64, %struct.FILE* noalias nocapture) nounwind 32 33 declare i32 @main(i32, i8** nocapture) nounwind 34 35 declare noalias %struct.FILE* @fopen(i8* noalias nocapture, i8* noalias nocapture) nounwind 36 37 declare i32 @fclose(%struct.FILE* nocapture) nounwind 38 39 declare void @sha_stream(%struct.SHA_INFO* nocapture, %struct.FILE* nocapture) nounwind 40 41 define void @sha_stream_bb3_2E_i(%struct.SHA_INFO* %sha_info, i8* %data1, i32, i8** %buffer_addr.0.i.out, i32* %count_addr.0.i.out) nounwind { 42 newFuncRoot: 43 br label %bb3.i 44 45 sha_update.exit.exitStub: ; preds = %bb3.i 46 store i8* %buffer_addr.0.i, i8** %buffer_addr.0.i.out 47 store i32 %count_addr.0.i, i32* %count_addr.0.i.out 48 ret void 49 50 bb2.i: ; preds = %bb3.i 51 %1 = getelementptr %struct.SHA_INFO, %struct.SHA_INFO* %sha_info, i64 0, i32 3 52 %2 = bitcast [16 x i32]* %1 to i8* 53 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %buffer_addr.0.i, i64 64, i32 1, i1 false) 54 %3 = getelementptr %struct.SHA_INFO, %struct.SHA_INFO* %sha_info, i64 0, i32 3, i64 0 55 %4 = bitcast i32* %3 to i8* 56 br label %codeRepl 57 58 codeRepl: ; preds = %bb2.i 59 call void @sha_stream_bb3_2E_i_bb1_2E_i_2E_i(i8* %4) 60 br label %byte_reverse.exit.i 61 62 byte_reverse.exit.i: ; preds = %codeRepl 63 call fastcc void @sha_transform(%struct.SHA_INFO* %sha_info) nounwind 64 %5 = getelementptr i8, i8* %buffer_addr.0.i, i64 64 65 %6 = add i32 %count_addr.0.i, -64 66 br label %bb3.i 67 68 bb3.i: ; preds = %byte_reverse.exit.i, %newFuncRoot 69 %buffer_addr.0.i = phi i8* [ %data1, %newFuncRoot ], [ %5, %byte_reverse.exit.i ] 70 %count_addr.0.i = phi i32 [ %0, %newFuncRoot ], [ %6, %byte_reverse.exit.i ] 71 %7 = icmp sgt i32 %count_addr.0.i, 63 72 br i1 %7, label %bb2.i, label %sha_update.exit.exitStub 73 } 74 75 declare void @sha_stream_bb3_2E_i_bb1_2E_i_2E_i(i8*) nounwind 76 77 declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind 78 79 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind 80 81
