forked from OSchip/llvm-project
61 lines
1.6 KiB
LLVM
61 lines
1.6 KiB
LLVM
; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
|
|
; RUN: opt %loadPolly "-passes=scop(print<polly-optree>)" -disable-output < %s | FileCheck %s -match-full-lines
|
|
;
|
|
; Rematerialize a load.
|
|
;
|
|
; for (int j = 0; j < n; j += 1) {
|
|
; bodyA:
|
|
; double val = B[j];
|
|
;
|
|
; bodyB:
|
|
; A[j] = val;
|
|
; }
|
|
;
|
|
define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
|
|
entry:
|
|
br label %for
|
|
|
|
for:
|
|
%j = phi i32 [0, %entry], [%j.inc, %inc]
|
|
%j.cmp = icmp slt i32 %j, %n
|
|
br i1 %j.cmp, label %bodyA, label %exit
|
|
|
|
bodyA:
|
|
%B_idx = getelementptr inbounds double, double* %B, i32 %j
|
|
%val = load double, double* %B_idx
|
|
br label %bodyB
|
|
|
|
bodyB:
|
|
%A_idx = getelementptr inbounds double, double* %A, i32 %j
|
|
store double %val, double* %A_idx
|
|
br label %inc
|
|
|
|
inc:
|
|
%j.inc = add nuw nsw i32 %j, 1
|
|
br label %for
|
|
|
|
exit:
|
|
br label %return
|
|
|
|
return:
|
|
ret void
|
|
}
|
|
|
|
|
|
; CHECK: Statistics {
|
|
; CHECK: Known loads forwarded: 1
|
|
; CHECK: Operand trees forwarded: 1
|
|
; CHECK: Statements with forwarded operand trees: 1
|
|
; CHECK: }
|
|
|
|
; CHECK: Stmt_bodyB
|
|
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
|
|
; CHECK-NEXT: ;
|
|
; CHECK-NEXT: new: [n] -> { Stmt_bodyB[i0] -> MemRef_B[i0] };
|
|
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
|
|
; CHECK-NEXT: [n] -> { Stmt_bodyB[i0] -> MemRef_A[i0] };
|
|
; CHECK-NEXT: Instructions {
|
|
; CHECK-NEXT: %val = load double, double* %B_idx, align 8
|
|
; CHECK-NEXT: store double %val, double* %A_idx, align 8
|
|
; CHECK-NEXT: }
|