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IndependentBlocks: Add a couple of test cases. 

llvm-svn: 177438
This commit is contained in:
Tobias Grosser 2013-03-19 21:11:25 +00:00
parent 04d57c7b2c
commit d2fbbf0f74
3 changed files with 160 additions and 0 deletions
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51
polly/test/IndependentBlocks/inter_bb_scalar_dep.ll Normal file
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; RUN: opt %loadPolly -basicaa -polly-independent -S < %s | FileCheck %s
; void f(long A[], int N, int *init_ptr) {
; long i, j;
;
; for (i = 0; i < N; ++i) {
; init = *init_ptr;
; for (i = 0; i < N; ++i) {
; A[i] = init + 2;
; }
; }
; }
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* noalias %A, i64 %N, i64* noalias %init_ptr) nounwind {
entry:
; CHECK: entry
; CHECK: %init.s2a = alloca i64
; CHECK: br label %for.i
br label %for.i
for.i:
%indvar.i = phi i64 [ 0, %entry ], [ %indvar.i.next, %for.i.end ]
%indvar.i.next = add nsw i64 %indvar.i, 1
br label %entry.next
entry.next:
%init = load i64* %init_ptr
br label %for.j
for.j:
%indvar.j = phi i64 [ 0, %entry.next ], [ %indvar.j.next, %for.j ]
%init_plus_two = add i64 %init, 2
; CHECK: %init.loadarray = load i64* %init.s2a
; CHECK: %init_plus_two = add i64 %init.loadarray, 2
%scevgep = getelementptr i64* %A, i64 %indvar.j
store i64 %init_plus_two, i64* %scevgep
%indvar.j.next = add nsw i64 %indvar.j, 1
%exitcond.j = icmp eq i64 %indvar.j.next, %N
br i1 %exitcond.j, label %for.i.end, label %for.j
for.i.end:
%exitcond.i = icmp eq i64 %indvar.i.next, %N
br i1 %exitcond.i, label %return, label %for.i
return:
ret void
}

58
polly/test/IndependentBlocks/intra_and_inter_bb_scalar_dep.ll Normal file
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; RUN: opt %loadPolly -basicaa -polly-independent -S < %s | FileCheck %s
; void f(long A[], int N, int *init_ptr) {
; long i, j;
;
; for (i = 0; i < N; ++i) {
; init = *init_ptr;
; for (i = 0; i < N; ++i) {
; init2 = *init_ptr;
; A[i] = init + init2;
; }
; }
; }
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* noalias %A, i64 %N, i64* noalias %init_ptr) nounwind {
entry:
; CHECK: entry
; CHECK: %init.s2a = alloca i64
; CHECK: br label %for.i
br label %for.i
for.i:
%indvar.i = phi i64 [ 0, %entry ], [ %indvar.i.next, %for.i.end ]
%indvar.i.next = add nsw i64 %indvar.i, 1
br label %entry.next
entry.next:
%init = load i64* %init_ptr
br label %for.j
for.j:
%indvar.j = phi i64 [ 0, %entry.next ], [ %indvar.j.next, %for.j ]
%init_2 = load i64* %init_ptr
%init_sum = add i64 %init, %init_2
; CHECK: %init_2 = load i64* %init_ptr
; CHECK: %init.loadarray = load i64* %init.s2a
; CHECK: %init_sum = add i64 %init.loadarray, %init_2
; The SCEV of %init_sum is (%init + %init_2). It is referring to both an
; UnknownValue in the same and in a different basic block. We want only the
; reference to the different basic block to be replaced.
%scevgep = getelementptr i64* %A, i64 %indvar.j
store i64 %init_sum, i64* %scevgep
%indvar.j.next = add nsw i64 %indvar.j, 1
%exitcond.j = icmp eq i64 %indvar.j.next, %N
br i1 %exitcond.j, label %for.i.end, label %for.j
for.i.end:
%exitcond.i = icmp eq i64 %indvar.i.next, %N
br i1 %exitcond.i, label %return, label %for.i
return:
ret void
}

51
polly/test/IndependentBlocks/intra_bb_scalar_dep.ll Normal file
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@ -0,0 +1,51 @@
; RUN: opt %loadPolly -basicaa -polly-independent -S < %s | FileCheck %s
; void f(long A[], int N, int *init_ptr) {
; long i, j;
;
; for (i = 0; i < N; ++i) {
; for (i = 0; i < N; ++i) {
; init = *init_ptr;
; A[i] = init + 2;
; }
; }
; }
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* noalias %A, i64 %N, i64* noalias %init_ptr) nounwind {
entry:
; CHECK: entry
; CHECK: br label %for.i
br label %for.i
for.i:
%indvar.i = phi i64 [ 0, %entry ], [ %indvar.i.next, %for.i.end ]
%indvar.i.next = add nsw i64 %indvar.i, 1
br label %entry.next
entry.next:
br label %for.j
for.j:
%indvar.j = phi i64 [ 0, %entry.next ], [ %indvar.j.next, %for.j ]
%init = load i64* %init_ptr
%init_plus_two = add i64 %init, 2
; The scalar evolution of %init_plus_two is (2 + %init). So we have a
; non-trivial scalar evolution referring to a value in the same basic block.
; We want to ensure that this scalar is not translated into a memory copy.
%scevgep = getelementptr i64* %A, i64 %indvar.j
store i64 %init_plus_two, i64* %scevgep
%indvar.j.next = add nsw i64 %indvar.j, 1
%exitcond.j = icmp eq i64 %indvar.j.next, %N
br i1 %exitcond.j, label %for.i.end, label %for.j
for.i.end:
%exitcond.i = icmp eq i64 %indvar.i.next, %N
br i1 %exitcond.i, label %return, label %for.i
return:
ret void
}