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llvm-project/polly/test/ScopInfo/multiple_latch_blocks.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 -analyze -polly-scops < %s | FileCheck %s
Allow loops with multiple back edges In order to allow multiple back edges we: - compute the conditions under which each back edge is taken - build the union over all these conditions, thus the condition that any back edge is taken - apply the same logic to the union we applied to a single back edge llvm-svn: 248120
2015-09-20 23:00:20 +08:00
;
; CHECK: Domain :=
Update to ISL 0.16.1 llvm-svn: 257898
2016-01-15 23:54:45 +08:00
; CHECK: [N, P] -> { Stmt_if_end[i0] : 0 <= i0 < N and (i0 > P or i0 < P) };
Allow loops with multiple back edges In order to allow multiple back edges we: - compute the conditions under which each back edge is taken - build the union over all these conditions, thus the condition that any back edge is taken - apply the same logic to the union we applied to a single back edge llvm-svn: 248120
2015-09-20 23:00:20 +08:00
;
; void f(int *A, int N, int P, int Q) {
; for (int i = 0; i < N; i++) {
; if (i == P)
; continue;
; A[i]++;
; }
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A, i32 %N, i32 %P, i32 %Q) {
entry:
%tmp = sext i32 %N to i64
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %if.then ], [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%cmp = icmp slt i64 %indvars.iv, %tmp
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%tmp1 = trunc i64 %indvars.iv to i32
%cmp1 = icmp eq i32 %tmp1, %P
br i1 %cmp1, label %if.then, label %if.end
if.then: ; preds = %for.body
br label %for.cond
if.end: ; preds = %for.body
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp2 = load i32, i32* %arrayidx, align 4
%inc = add nsw i32 %tmp2, 1
store i32 %inc, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %if.end, %if.then
br label %for.cond
for.end: ; preds = %for.cond
ret void
}