base_pointer.ll
7.6 KB
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; RUN: opt %loadPolly -disable-basicaa -polly-detect -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
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 @base_pointer_in_condition(i64** noalias %A_ptr, i64 %N) nounwind {
entry:
fence seq_cst
br label %pre
pre:
%A = load i64*, i64** %A_ptr
br i1 true, label %for.i, label %then
for.i:
%indvar = phi i64 [ 0, %pre ], [ %indvar.next, %for.i ]
%scevgep = getelementptr i64, 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 %then, label %for.i
then:
br label %return
return:
fence seq_cst
ret void
}
; CHECK-LABEL: base_pointer_in_condition
; CHECK: Valid Region for Scop: pre => return
define void @base_pointer_is_argument(float* %A, i64 %n) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* %A, i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK-LABEL: base_pointer_is_argument
; CHECK: Valid Region for Scop: for.i => exit
define void @base_pointer_is_const_expr(i64 %n) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* inttoptr (i64 100 to float*), i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK-LABEL: base_pointer_is_const_expr
; CHECK-LABEL: Valid Region for Scop: for.i => exit
@A = external global float
define void @base_pointer_is_global(i64 %n) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* @A, i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK-LABEL: base_pointer_is_global
; CHECK: Valid Region for Scop: for.i => exit
declare float *@foo()
define void @base_pointer_is_inst_outside(i64 %n) {
entry:
%A = call float *@foo()
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* %A, i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK-LABEL: base_pointer_is_inst_outside
; CHECK: Valid Region for Scop: for.i => exit
declare float* @getNextBasePtr(float*) readnone nounwind
define void @base_pointer_is_phi_node(i64 %n, float* %A) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
%ptr = phi float* [ %ptr.next, %for.i.inc ], [ %A, %entry ]
; To get a PHI node inside a SCoP that can not be analyzed but
; for which the surrounding SCoP is normally still valid we use a function
; without any side effects.
%ptr.next = call float* @getNextBasePtr(float* %ptr)
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* %ptr, i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK-LABEL: base_pointer_is_phi_node
; CHECK-NOT: Valid Region for Scop
define void @base_pointer_is_inst_inside_invariant_1(i64 %n, float* %A) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
; A function return value, even with readnone nounwind attributes, is not
; considered a valid base pointer because it can return a pointer that aliases
; with something else (e.g. %A or a global) or return a different pointer at
; every call (e.g. malloc)
%ptr = call float* @getNextBasePtr(float* %A)
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* %ptr, i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK-LABEL: base_pointer_is_inst_inside_invariant_1
; CHECK-NOT: Valid Region for Scop
declare float* @getNextBasePtr2(float*) readnone nounwind
define void @base_pointer_is_inst_inside_invariant_2(i64 %n, float* %A) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
%ptr = call float* @getNextBasePtr2(float* %A)
%ptr2 = call float* @getNextBasePtr(float* %ptr)
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* %ptr2, i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK-LABEL: base_pointer_is_inst_inside_invariant_2
; CHECK-NOT: Valid Region for Scop
declare float* @getNextBasePtr3(float*, i64) readnone nounwind
define void @base_pointer_is_inst_inside_variant(i64 %n, float* %A) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
%ptr = call float* @getNextBasePtr3(float* %A, i64 %indvar.i)
%ptr2 = call float* @getNextBasePtr(float* %ptr)
br label %S1
S1:
%conv = sitofp i64 %indvar.i to float
%arrayidx5 = getelementptr float, float* %ptr2, i64 %indvar.i
store float %conv, float* %arrayidx5, align 4
br label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK: base_pointer_is_inst_inside_variant
; CHECK-NOT: Valid Region for Scop
define void @base_pointer_is_ptr2ptr(float** noalias %A, i64 %n) {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ %indvar.i.next, %for.i.inc ], [ 0, %entry ]
%arrayidx = getelementptr float*, float** %A, i64 %indvar.i
br label %for.j
for.j:
%indvar.j = phi i64 [ 0, %for.i ], [ %indvar.j.next, %for.j ]
%conv = sitofp i64 %indvar.i to float
%basepointer = load float*, float** %arrayidx, align 8
%arrayidx5 = getelementptr float, float* %basepointer, i64 %indvar.j
store float %conv, float* %arrayidx5, align 4
%indvar.j.next = add i64 %indvar.j, 1
%exitcond.j = icmp ne i64 %indvar.j.next, %n
br i1 %exitcond.j, label %for.j, label %for.i.inc
for.i.inc:
%indvar.i.next = add i64 %indvar.i, 1
%exitcond.i = icmp ne i64 %indvar.i.next, %n
br i1 %exitcond.i, label %for.i, label %exit
exit:
ret void
}
; CHECK: base_pointer_is_ptr2ptr
; CHECK: Valid Region for Scop: for.j => for.i.inc