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

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ScopDetection: Only detect scops that have at least one read and one write Scops that only read seem generally uninteresting and scops that only write are most likely initializations where there is also little to optimize. To not waste compile time we bail early. Differential Revision: http://reviews.llvm.org/D7735 llvm-svn: 229820
2015-02-19 13:31:07 +08:00
; RUN: opt %loadPolly -polly-detect-unprofitable -polly-detect -analyze < %s | FileCheck %s
ScopDetect: Transitively remove all children after region expansion In rare cases, a region R which is itself not valid has an indirect child region that is valid. When R becomes part of a valid region by expansion of another region, then all children of R have to be erased from the set of valid regions. This patch ensures that indirect children are erased in addition to direct children. Contributed-by: Armin Groesslinger <armin.groesslinger@uni-passau.de> Tobias: I added a reduced test case and adjusted the logic of the patch to only recurse until the first child is found. llvm-svn: 200411
2014-01-30 03:05:30 +08:00
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-n8:16:32:64-S128"
define void @remove_all_children(i32* %eclass) {
entry:
br label %while.body
while.cond.loopexit: ; preds = %while.body50, %while.end44
fence seq_cst
br label %while.cond.backedge
while.body: ; preds = %while.cond.backedge, %entry
br label %if.end33
while.cond.backedge: ; preds = %while.end30, %while.cond.loopexit
br i1 false, label %while.body, label %while.end60
if.end33: ; preds = %while.end30
br i1 false, label %while.body36, label %while.end44
while.body36: ; preds = %while.body36, %while.body36.lr.ph
%indvar77 = phi i64 [ 0, %if.end33 ], [ %indvar.next78, %while.body36 ]
Update Polly tests to handle explicitly typed gep changes in LLVM llvm-svn: 230784
2015-02-28 03:20:19 +08:00
%arrayidx40 = getelementptr i32, i32* %eclass, i64 0
ScopDetect: Transitively remove all children after region expansion In rare cases, a region R which is itself not valid has an indirect child region that is valid. When R becomes part of a valid region by expansion of another region, then all children of R have to be erased from the set of valid regions. This patch ensures that indirect children are erased in addition to direct children. Contributed-by: Armin Groesslinger <armin.groesslinger@uni-passau.de> Tobias: I added a reduced test case and adjusted the logic of the patch to only recurse until the first child is found. llvm-svn: 200411
2014-01-30 03:05:30 +08:00
%indvar.next78 = add i64 %indvar77, 1
br i1 false, label %while.body36, label %while.end44
while.end44: ; preds = %while.body36, %if.end33
br i1 false, label %while.body50, label %while.cond.loopexit
while.body50: ; preds = %while.body50, %while.body50.lr.ph
%indvar79 = phi i64 [ 0, %while.end44 ], [ %indvar.next80, %while.body50 ]
Update Polly tests to handle explicitly typed gep changes in LLVM llvm-svn: 230784
2015-02-28 03:20:19 +08:00
%arrayidx55 = getelementptr i32, i32* %eclass, i64 0
ScopDetect: Transitively remove all children after region expansion In rare cases, a region R which is itself not valid has an indirect child region that is valid. When R becomes part of a valid region by expansion of another region, then all children of R have to be erased from the set of valid regions. This patch ensures that indirect children are erased in addition to direct children. Contributed-by: Armin Groesslinger <armin.groesslinger@uni-passau.de> Tobias: I added a reduced test case and adjusted the logic of the patch to only recurse until the first child is found. llvm-svn: 200411
2014-01-30 03:05:30 +08:00
store i32 0, i32* %arrayidx55, align 4
%indvar.next80 = add i64 %indvar79, 1
br i1 false, label %while.body50, label %while.cond.loopexit
while.end60: ; preds = %while.cond.backedge
ret void
}
; remove_all_children
; CHECK-NOT: Valid Region
; CHECK: Valid Region for Scop: if.end33 => while.cond.loopexit
; CHECK-NOT: Valid Region