forward_from_region.ll
2.07 KB
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; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
;
; Move instructions from region statements.
;
; for (int j = 0; j < n; j += 1) {
; bodyA:
; double val = 21.0 + 21.0;
; if (cond)
;
; bodyA_true:
; A[0] = 42;
;
; bodyB:
; A[0] = val;
; }
;
define void @func(i32 %n, double* noalias nonnull %A) {
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:
%val = fadd double 21.0, 21.0
%cond = fcmp oeq double 21.0, 21.0
br i1 %cond, label %bodyA_true, label %bodyB
bodyA_true:
store double 42.0, double* %A
br label %bodyB
bodyB:
store double %val, double* %A
br label %bodyB_exit
bodyB_exit:
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: Instructions copied: 1
; CHECK: Known loads forwarded: 0
; CHECK: Read-only accesses copied: 0
; CHECK: Operand trees forwarded: 1
; CHECK: Statements with forwarded operand trees: 1
; CHECK: }
; CHECK: After statements {
; CHECK: Stmt_bodyA__TO__bodyB
; CHECK: MayWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK: [n] -> { Stmt_bodyA__TO__bodyB[i0] -> MemRef_A[0] };
; CHECK: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK: [n] -> { Stmt_bodyA__TO__bodyB[i0] -> MemRef_val[] };
; CHECK: Instructions {
; CHECK: %val = fadd double 2.100000e+01, 2.100000e+01
; CHECK: %cond = fcmp oeq double 2.100000e+01, 2.100000e+01
; CHECK: }
; CHECK: Stmt_bodyB
; CHECK: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK: [n] -> { Stmt_bodyB[i0] -> MemRef_A[0] };
; CHECK: Instructions {
; CHECK: %val = fadd double 2.100000e+01, 2.100000e+01
; CHECK: store double %val, double* %A
; CHECK: }
; CHECK: }