llvm/test/Analysis/ScalarEvolution/trip-count3.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

79 lines
3.5 KiB
LLVM

; RUN: opt < %s -scalar-evolution -analyze -disable-output \
; RUN: | grep {Loop bb3\\.i: Unpredictable backedge-taken count\\.}
; ScalarEvolution can't compute a trip count because it doesn't know if
; dividing by the stride will have a remainder. This could theoretically
; be teaching it how to use a more elaborate trip count computation.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-unknown-linux-gnu"
%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] }
%struct.SHA_INFO = type { [5 x i32], i32, i32, [16 x i32] }
%struct._IO_marker = type { %struct._IO_marker*, %struct.FILE*, i32 }
@_2E_str = external constant [26 x i8] ; <[26 x i8]*> [#uses=0]
@stdin = external global %struct.FILE* ; <%struct.FILE**> [#uses=0]
@_2E_str1 = external constant [3 x i8] ; <[3 x i8]*> [#uses=0]
@_2E_str12 = external constant [30 x i8] ; <[30 x i8]*> [#uses=0]
declare void @sha_init(%struct.SHA_INFO* nocapture) nounwind
declare fastcc void @sha_transform(%struct.SHA_INFO* nocapture) nounwind
declare void @sha_print(%struct.SHA_INFO* nocapture) nounwind
declare i32 @printf(i8* nocapture, ...) nounwind
declare void @sha_final(%struct.SHA_INFO* nocapture) nounwind
declare void @llvm.memset.i64(i8* nocapture, i8, i64, i32) nounwind
declare void @sha_update(%struct.SHA_INFO* nocapture, i8* nocapture, i32) nounwind
declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
declare i64 @fread(i8* noalias nocapture, i64, i64, %struct.FILE* noalias nocapture) nounwind
declare i32 @main(i32, i8** nocapture) nounwind
declare noalias %struct.FILE* @fopen(i8* noalias nocapture, i8* noalias nocapture) nounwind
declare i32 @fclose(%struct.FILE* nocapture) nounwind
declare void @sha_stream(%struct.SHA_INFO* nocapture, %struct.FILE* nocapture) nounwind
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 {
newFuncRoot:
br label %bb3.i
sha_update.exit.exitStub: ; preds = %bb3.i
store i8* %buffer_addr.0.i, i8** %buffer_addr.0.i.out
store i32 %count_addr.0.i, i32* %count_addr.0.i.out
ret void
bb2.i: ; preds = %bb3.i
%1 = getelementptr %struct.SHA_INFO* %sha_info, i64 0, i32 3 ; <[16 x i32]*> [#uses=1]
%2 = bitcast [16 x i32]* %1 to i8* ; <i8*> [#uses=1]
call void @llvm.memcpy.i64(i8* %2, i8* %buffer_addr.0.i, i64 64, i32 1) nounwind
%3 = getelementptr %struct.SHA_INFO* %sha_info, i64 0, i32 3, i64 0 ; <i32*> [#uses=1]
%4 = bitcast i32* %3 to i8* ; <i8*> [#uses=1]
br label %codeRepl
codeRepl: ; preds = %bb2.i
call void @sha_stream_bb3_2E_i_bb1_2E_i_2E_i(i8* %4)
br label %byte_reverse.exit.i
byte_reverse.exit.i: ; preds = %codeRepl
call fastcc void @sha_transform(%struct.SHA_INFO* %sha_info) nounwind
%5 = getelementptr i8* %buffer_addr.0.i, i64 64 ; <i8*> [#uses=1]
%6 = add i32 %count_addr.0.i, -64 ; <i32> [#uses=1]
br label %bb3.i
bb3.i: ; preds = %byte_reverse.exit.i, %newFuncRoot
%buffer_addr.0.i = phi i8* [ %data1, %newFuncRoot ], [ %5, %byte_reverse.exit.i ] ; <i8*> [#uses=3]
%count_addr.0.i = phi i32 [ %0, %newFuncRoot ], [ %6, %byte_reverse.exit.i ] ; <i32> [#uses=3]
%7 = icmp sgt i32 %count_addr.0.i, 63 ; <i1> [#uses=1]
br i1 %7, label %bb2.i, label %sha_update.exit.exitStub
}
declare void @sha_stream_bb3_2E_i_bb1_2E_i_2E_i(i8*) nounwind