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| ; RUN: opt -S -loop-rotate < %s | FileCheck %s
; RUN: opt -S -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0"
; PR5837
define void @test(i32 %N, double* %G) nounwind ssp {
entry:
br label %for.cond
for.cond: ; preds = %for.body, %entry
%j.0 = phi i64 [ 1, %entry ], [ %inc, %for.body ] ; <i64> [#uses=5]
%cmp = icmp slt i64 %j.0, 1000 ; <i1> [#uses=1]
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds double, double* %G, i64 %j.0 ; <double*> [#uses=1]
%tmp3 = load double, double* %arrayidx ; <double> [#uses=1]
%sub = sub i64 %j.0, 1 ; <i64> [#uses=1]
%arrayidx6 = getelementptr inbounds double, double* %G, i64 %sub ; <double*> [#uses=1]
%tmp7 = load double, double* %arrayidx6 ; <double> [#uses=1]
%add = fadd double %tmp3, %tmp7 ; <double> [#uses=1]
%arrayidx10 = getelementptr inbounds double, double* %G, i64 %j.0 ; <double*> [#uses=1]
store double %add, double* %arrayidx10
%inc = add nsw i64 %j.0, 1 ; <i64> [#uses=1]
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
; Should only end up with one phi.
; CHECK-LABEL: define void @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label %for.body
; CHECK: for.body:
; CHECK-NEXT: %j.01 = phi i64
; CHECK-NOT: br
; CHECK: br i1 %cmp, label %for.body, label %for.end
; CHECK: for.end:
; CHECK-NEXT: ret void
|