forked from OSchip/llvm-project
162 lines
5.9 KiB
LLVM
162 lines
5.9 KiB
LLVM
; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-optree -polly-codegen -analyze < %s | FileCheck %s -match-full-lines
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;
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; %val1 is used three times: Twice by its own operand tree of %val2 and once
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; more by the store in %bodyB.
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; Verify that we can handle multiple uses by the same instruction and uses
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; in multiple statements as well.
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; The result processing may depend on the order in which the values are used,
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; hence we check both orderings.
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;
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; for (int j = 0; j < n; j += 1) {
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; bodyA:
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; double val1 = A[j];
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; double val2 = val1 + val1;
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;
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; bodyB:
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; B[j] = val1;
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; C[j] = val2;
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; }
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;
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define void @func1(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B, double* noalias nonnull %C) {
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entry:
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br label %for
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for:
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%j = phi i32 [0, %entry], [%j.inc, %inc]
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%j.cmp = icmp slt i32 %j, %n
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br i1 %j.cmp, label %bodyA, label %exit
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bodyA:
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%A_idx = getelementptr inbounds double, double* %A, i32 %j
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%val1 = load double, double* %A_idx
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%val2 = fadd double %val1, %val1
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br label %bodyB
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bodyB:
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%B_idx = getelementptr inbounds double, double* %B, i32 %j
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store double %val1, double* %B_idx
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%C_idx = getelementptr inbounds double, double* %C, i32 %j
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store double %val2, double* %C_idx
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br label %inc
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inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %for
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exit:
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br label %return
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return:
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ret void
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}
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; CHECK: Statistics {
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; CHECK: Instructions copied: 1
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; CHECK: Known loads forwarded: 3
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; CHECK: Operand trees forwarded: 2
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; CHECK: Statements with forwarded operand trees: 1
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; CHECK: }
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; CHECK: After statements {
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; CHECK-NEXT: Stmt_bodyA
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_bodyA[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [n] -> { Stmt_bodyA[i0] -> MemRef_val1[] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [n] -> { Stmt_bodyA[i0] -> MemRef_val2[] };
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; CHECK-NEXT: Instructions {
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: %val2 = fadd double %val1, %val1
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; CHECK-NEXT: }
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; CHECK-NEXT: Stmt_bodyB
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: ;
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; CHECK-NEXT: new: [n] -> { Stmt_bodyB[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_bodyB[i0] -> MemRef_B[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_bodyB[i0] -> MemRef_C[i0] };
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; CHECK-NEXT: Instructions {
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: %val2 = fadd double %val1, %val1
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: store double %val1, double* %B_idx
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; CHECK-NEXT: store double %val2, double* %C_idx
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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define void @func2(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B, double* noalias nonnull %C) {
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entry:
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br label %for
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for:
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%j = phi i32 [0, %entry], [%j.inc, %inc]
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%j.cmp = icmp slt i32 %j, %n
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br i1 %j.cmp, label %bodyA, label %exit
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bodyA:
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%A_idx = getelementptr inbounds double, double* %A, i32 %j
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%val1 = load double, double* %A_idx
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%val2 = fadd double %val1, %val1
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br label %bodyB
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bodyB:
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%B_idx = getelementptr inbounds double, double* %B, i32 %j
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store double %val2, double* %B_idx
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%C_idx = getelementptr inbounds double, double* %C, i32 %j
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store double %val1, double* %C_idx
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br label %inc
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inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %for
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exit:
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br label %return
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return:
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ret void
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}
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; CHECK: Statistics {
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; CHECK: Instructions copied: 1
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; CHECK: Known loads forwarded: 3
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; CHECK: Operand trees forwarded: 2
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; CHECK: Statements with forwarded operand trees: 1
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; CHECK: }
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; CHECK: After statements {
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; CHECK-NEXT: Stmt_bodyA
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_bodyA[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [n] -> { Stmt_bodyA[i0] -> MemRef_val2[] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [n] -> { Stmt_bodyA[i0] -> MemRef_val1[] };
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; CHECK-NEXT: Instructions {
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: %val2 = fadd double %val1, %val1
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; CHECK-NEXT: }
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; CHECK-NEXT: Stmt_bodyB
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: ;
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; CHECK-NEXT: new: [n] -> { Stmt_bodyB[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_bodyB[i0] -> MemRef_B[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_bodyB[i0] -> MemRef_C[i0] };
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; CHECK-NEXT: Instructions {
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: %val1 = load double, double* %A_idx
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; CHECK-NEXT: %val2 = fadd double %val1, %val1
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; CHECK-NEXT: store double %val2, double* %B_idx
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; CHECK-NEXT: store double %val1, double* %C_idx
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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