stmt_with_read_but_without_sideffect.ll
5.39 KB
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; RUN: opt %loadPolly -polly-delicm -analyze < %s | FileCheck %s
;
; The statement Stmt_for_if_else_1 should be removed because it has no
; sideeffects. But it has a use of MemRef_tmp21 that must also be
; removed from every list containing it.
; This is a test-case meant for ScopInfo, but only later pass iterate
; over the uses of MemRef_tmp21 of which the use by Stmt_for_if_else_1
; should have been removed. We use -polly-delicm to trigger such an
; iteration of an already deleted MemoryAccess.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
@ATH = external dso_local unnamed_addr constant [88 x float], align 16
define void @setup_tone_curves() {
entry:
%ath = alloca [56 x float], align 16
br label %for.body
for.cond176.preheader: ; preds = %for.cond107.preheader
unreachable
for.body: ; preds = %for.cond107.preheader, %entry
%indvars.iv999 = phi i64 [ 0, %entry ], [ %indvars.iv.next1000, %for.cond107.preheader ]
%tmp5 = shl nsw i64 %indvars.iv999, 2
br label %for.cond7.preheader
for.cond33.preheader: ; preds = %for.inc.1
br label %for.cond107.preheader
for.cond7.preheader: ; preds = %for.inc.1, %for.body
%indvars.iv958 = phi i64 [ 0, %for.body ], [ %indvars.iv.next959, %for.inc.1 ]
%tmp20 = add nuw nsw i64 %indvars.iv958, %tmp5
%arrayidx = getelementptr inbounds [88 x float], [88 x float]* @ATH, i64 0, i64 %tmp20
%tmp21 = load float, float* %arrayidx, align 4
%tmp22 = add nuw nsw i64 %tmp20, 1
%cmp12.1 = icmp ult i64 %tmp22, 88
br i1 %cmp12.1, label %if.then.1, label %if.else.1
for.cond107.preheader: ; preds = %for.cond33.preheader
%indvars.iv.next1000 = add nuw nsw i64 %indvars.iv999, 1
br i1 undef, label %for.cond176.preheader, label %for.body
if.else.1: ; preds = %for.cond7.preheader
%cmp23.1 = fcmp ogt float %tmp21, -3.000000e+01
br label %for.inc.1
if.then.1: ; preds = %for.cond7.preheader
%arrayidx.1 = getelementptr inbounds [88 x float], [88 x float]* @ATH, i64 0, i64 %tmp22
%tmp155 = load float, float* %arrayidx.1, align 4
%cmp16.1 = fcmp ogt float %tmp21, %tmp155
br label %for.inc.1
for.inc.1: ; preds = %if.then.1, %if.else.1
%min.1.1 = phi float [ %tmp155, %if.then.1 ], [ -3.000000e+01, %if.else.1 ]
%arrayidx.2 = getelementptr inbounds [88 x float], [88 x float]* @ATH, i64 0, i64 0
%tmp157 = load float, float* %arrayidx.2, align 4
%cmp16.2 = fcmp ogt float %min.1.1, %tmp157
%arrayidx.3 = getelementptr inbounds [88 x float], [88 x float]* @ATH, i64 0, i64 0
%tmp159 = load float, float* %arrayidx.3, align 4
%cmp16.3 = fcmp ogt float %tmp157, %tmp159
%arrayidx29 = getelementptr inbounds [56 x float], [56 x float]* %ath, i64 0, i64 %indvars.iv958
store float %tmp159, float* %arrayidx29, align 4
%indvars.iv.next959 = add nuw nsw i64 %indvars.iv958, 1
%exitcond961 = icmp eq i64 %indvars.iv.next959, 56
br i1 %exitcond961, label %for.cond33.preheader, label %for.cond7.preheader
}
; CHECK: After accesses {
; CHECK-NEXT: Stmt_for_cond7_preheader
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [p_0] -> { Stmt_for_cond7_preheader[i0] -> MemRef_ATH[4p_0 + i0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [p_0] -> { Stmt_for_cond7_preheader[i0] -> MemRef_tmp21[] };
; CHECK-NEXT: new: [p_0] -> { Stmt_for_cond7_preheader[i0] -> MemRef_ath[i0] };
; CHECK-NEXT: Stmt_if_then_1
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [p_0] -> { Stmt_if_then_1[i0] -> MemRef_ATH[1 + 4p_0 + i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [p_0] -> { Stmt_if_then_1[i0] -> MemRef_tmp21[] };
; CHECK-NEXT: new: [p_0] -> { Stmt_if_then_1[i0] -> MemRef_ath[i0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [p_0] -> { Stmt_if_then_1[i0] -> MemRef_min_1_1__phi[] };
; CHECK-NEXT: new: [p_0] -> { Stmt_if_then_1[i0] -> MemRef_ath[i0] };
; CHECK-NEXT: Stmt_if_else_1_last
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [p_0] -> { Stmt_if_else_1_last[i0] -> MemRef_min_1_1__phi[] };
; CHECK-NEXT: new: [p_0] -> { Stmt_if_else_1_last[i0] -> MemRef_ath[i0] : p_0 <= 576460752303423487 };
; CHECK-NEXT: Stmt_for_inc_1
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [p_0] -> { Stmt_for_inc_1[i0] -> MemRef_min_1_1__phi[] };
; CHECK-NEXT: new: [p_0] -> { Stmt_for_inc_1[i0] -> MemRef_ath[i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [p_0] -> { Stmt_for_inc_1[i0] -> MemRef_ATH[0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [p_0] -> { Stmt_for_inc_1[i0] -> MemRef_ATH[0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [p_0] -> { Stmt_for_inc_1[i0] -> MemRef_ath[i0] };
; CHECK-NEXT: }