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ScopDetect: Add test cases for non-simple regions llvm-svn: 177567
2013-03-21 04:02:35 +08:00
; RUN: opt %loadPolly -polly-detect -analyze < %s | FileCheck %s
Remove last uses of canoncial induction variable when scev code generating We now detect scops without a canonical induction variable and can generate a polyhedral representation for them. There was no modification necessary to code generate these scops. llvm-svn: 177643
2013-03-22 00:14:50 +08:00
; RUN: opt %loadPolly -polly-detect -polly-codegen-scev -analyze < %s | FileCheck %s
ScopDetect: Add test cases for non-simple regions llvm-svn: 177567
2013-03-21 04:02:35 +08:00
; void f(long A[], long N) {
; long i;
; if (true)
; if (true)
; for (i = 0; i < N; ++i)
; A[i] = i;
; }
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"
define void @f(i64* %A, i64 %N) nounwind {
entry:
fence seq_cst
br i1 true, label %next, label %return
next:
br i1 true, label %for.i, label %return
for.i:
%indvar = phi i64 [ 0, %next], [ %indvar.next, %for.i ]
%scevgep = getelementptr i64* %A, i64 %indvar
store i64 %indvar, i64* %scevgep
%indvar.next = add nsw i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, %N
br i1 %exitcond, label %return, label %for.i
return:
fence seq_cst
ret void
}
Support SCoPs with multiple exit edges Regions that have multiple exit edges are very common. A simple if condition yields e.g. such a region: if / \ then else \ / after Region: if -> after This regions contains the bbs 'if', 'then', 'else', but not 'after'. It has two exit edges 'then' -> 'after' and 'else' -> 'after'. Previously we scheduled the RegionSimplify pass to translate such regions into simple regions. With this patch, we now support them natively. Contributed-by: Star Tan <tanmx_star@yeah.net> llvm-svn: 179159
2013-04-10 14:55:31 +08:00
; CHECK: Valid Region for Scop: next => return