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llvm-project/polly/test/ScopDetect/simple_non_single_entry.ll

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tests: Drop -polly-detect-unprofitable and -polly-no-early-exit These flags are now always passed to all tests and need to be disabled if not needed. Disabling these flags, rather than passing them to almost all tests, significantly simplfies our RUN: lines. llvm-svn: 249422
2015-10-06 23:36:44 +08:00
; RUN: opt %loadPolly -polly-detect -analyze < %s | FileCheck %s
Support SCoPs with multiple entry edges. Regions that have multiple entry edges are very common. A simple if condition yields e.g. such a region: if / \ then else \ / for_region This for_region contains two entry edges 'then' -> 'for_region' and 'else' -> 'for_region'. Previously we scheduled the RegionSimplify pass to translate such regions into simple regions. With this patch, we now support them natively when the region is in -loop-simplify form, which means the entry block should not be a loop header. Contributed by: Star Tan <tanmx_star@yeah.net> llvm-svn: 179586
2013-04-16 16:04:42 +08:00
; void f(long A[], long N) {
; long i;
;
; if (true){
; i = 0;
; goto next;
; }else{
; i = 1;
; goto next;
; }
;
; next:
; if (true)
; goto for.i;
; else
; goto for.i;
;
; for.i:
; 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"
define void @f(i64* %A, i64 %N) nounwind {
entry:
fence seq_cst
br i1 true, label %then1, label %else1
then1:
br label %next
else1:
br label %next
next:
br i1 true, label %then, label %else
then:
br label %for.i.head
else:
br label %for.i.head
for.i.head:
br label %for.i.head1
for.i.head1:
br label %for.i
for.i:
%indvar = phi i64 [ 0, %for.i.head1], [ %indvar.next, %for.i ]
fence seq_cst
Update Polly tests to handle explicitly typed gep changes in LLVM llvm-svn: 230784
2015-02-28 03:20:19 +08:00
%scevgep = getelementptr i64, i64* %A, i64 %indvar
Support SCoPs with multiple entry edges. Regions that have multiple entry edges are very common. A simple if condition yields e.g. such a region: if / \ then else \ / for_region This for_region contains two entry edges 'then' -> 'for_region' and 'else' -> 'for_region'. Previously we scheduled the RegionSimplify pass to translate such regions into simple regions. With this patch, we now support them natively when the region is in -loop-simplify form, which means the entry block should not be a loop header. Contributed by: Star Tan <tanmx_star@yeah.net> llvm-svn: 179586
2013-04-16 16:04:42 +08:00
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
}
Allow PHI nodes in the region exit block While we do not need to model PHI nodes in the region exit (as it is not part of the SCoP), we need to prepare for the case that the exit block is split in code generation to create a single exiting block. If this will happen, hence if the region did not have a single exiting block before, we will model the operands of the PHI nodes as escaping scalars in the SCoP. Differential Revision: http://reviews.llvm.org/D12051 llvm-svn: 247078
2015-09-09 05:44:27 +08:00
; CHECK: Valid Region for Scop: next => for.i