uninitialized_scalar_memory.ll
3.03 KB
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; RUN: opt %loadPolly -S -polly-codegen < %s | FileCheck %s
;
; Verify we initialize the scalar locations reserved for the incoming phi
; values.
;
; CHECK: polly.start:
; CHECK-NEXT: store float %ebig.0, float* %ebig.0.s2a
; CHECK-NEXT: br label %polly.stmt.if.end.entry
;
; int g(void);
; float M;
; int max(float *restrict xbig, int eres, int bres, float *restrict indx) {
; int i, iebig;
; float ebig;
; for (i = 0; i < 4 + eres; i++) {
; if (g())
; break;
;
; if (xbig[i] > ebig) {
; ebig = xbig[i];
; iebig = (int)(indx[i] + bres);
; }
; }
; return (iebig);
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
@M = common global float 0.000000e+00, align 4
define i32 @max(float* noalias %xbig, i32 %eres, i32 %bres, float* noalias %indx) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%iebig.0 = phi i32 [ undef, %entry ], [ %iebig.1, %for.inc ]
%ebig.0 = phi float [ undef, %entry ], [ %ebig.1, %for.inc ]
%add = add nsw i32 %eres, 4
%tmp = sext i32 %add to i64
%cmp = icmp slt i64 %indvars.iv, %tmp
br i1 %cmp, label %for.body, label %for.end.loopexit
for.body: ; preds = %for.cond
%call = call i32 @g() #2
%tobool = icmp eq i32 %call, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %for.body
%iebig.0.lcssa1 = phi i32 [ %iebig.0, %for.body ]
br label %for.end
if.end: ; preds = %for.body
%arrayidx = getelementptr inbounds float, float* %xbig, i64 %indvars.iv
%tmp3 = load float, float* %arrayidx, align 4
%cmp1 = fcmp ogt float %tmp3, %ebig.0
br i1 %cmp1, label %if.then.2, label %if.end.9
if.then.2: ; preds = %if.end
%arrayidx4 = getelementptr inbounds float, float* %xbig, i64 %indvars.iv
%tmp4 = load float, float* %arrayidx4, align 4
%arrayidx6 = getelementptr inbounds float, float* %indx, i64 %indvars.iv
%tmp5 = load float, float* %arrayidx6, align 4
%conv = sitofp i32 %bres to float
%add7 = fadd float %tmp5, %conv
%conv8 = fptosi float %add7 to i32
br label %if.end.9
if.end.9: ; preds = %if.then.2, %if.end
%iebig.1 = phi i32 [ %conv8, %if.then.2 ], [ %iebig.0, %if.end ]
%ebig.1 = phi float [ %tmp4, %if.then.2 ], [ %ebig.0, %if.end ]
br label %for.inc
for.inc: ; preds = %if.end.9
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end.loopexit: ; preds = %for.cond
%iebig.0.lcssa = phi i32 [ %iebig.0, %for.cond ]
br label %for.end
for.end: ; preds = %for.end.loopexit, %if.then
%iebig.02 = phi i32 [ %iebig.0.lcssa, %for.end.loopexit ], [ %iebig.0.lcssa1, %if.then ]
ret i32 %iebig.02
}
declare i32 @g() #1