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; RUN: llc -mtriple=i386-unknown-linux-gnu -mattr=-slow-incdec < %s | FileCheck -check-prefix=INCDEC %s
; RUN: llc -mtriple=i386-unknown-linux-gnu -mattr=+slow-incdec < %s | FileCheck -check-prefix=ADD %s
; check -mattr=-slow-incdec
; INCDEC-NOT: addl $-1
; INCDEC: dec
; INCDEC-NOT: addl $1
; INCDEC: inc
; check -mattr=+slow-incdec
; ADD: addl $-1
; ADD-NOT: dec
; ADD: addl $1
; ADD-NOT: inc
; Function Attrs: nounwind readonly
define i32 @slow_1(i32* nocapture readonly %a, i32 %s) #0 {
entry:
%cmp5 = icmp eq i32 %s, 0
br i1 %cmp5, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.cond: ; preds = %for.body
%cmp = icmp eq i32 %dec, 0
br i1 %cmp, label %for.end.loopexit, label %for.body
for.body: ; preds = %for.body.preheader, %for.cond
%i.06 = phi i32 [ %dec, %for.cond ], [ %s, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %a, i32 %i.06
%0 = load i32, i32* %arrayidx, align 4, !tbaa !1
%cmp1 = icmp eq i32 %0, 0
;
%dec = add nsw i32 %i.06, -1
br i1 %cmp1, label %for.end.loopexit, label %for.cond
for.end.loopexit: ; preds = %for.cond, %for.body
%i.0.lcssa.ph = phi i32 [ 0, %for.cond ], [ %i.06, %for.body ]
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%i.0.lcssa = phi i32 [ 0, %entry ], [ %i.0.lcssa.ph, %for.end.loopexit ]
ret i32 %i.0.lcssa
}
; Function Attrs: nounwind readonly
define i32 @slow_2(i32* nocapture readonly %a, i32 %s) #0 {
entry:
%cmp5 = icmp eq i32 %s, 0
br i1 %cmp5, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.cond: ; preds = %for.body
%cmp = icmp eq i32 %inc, 0
br i1 %cmp, label %for.end.loopexit, label %for.body
for.body: ; preds = %for.body.preheader, %for.cond
%i.06 = phi i32 [ %inc, %for.cond ], [ %s, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %a, i32 %i.06
%0 = load i32, i32* %arrayidx, align 4, !tbaa !1
%cmp1 = icmp eq i32 %0, 0
%inc = add nsw i32 %i.06, 1
br i1 %cmp1, label %for.end.loopexit, label %for.cond
for.end.loopexit: ; preds = %for.cond, %for.body
%i.0.lcssa.ph = phi i32 [ 0, %for.cond ], [ %i.06, %for.body ]
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%i.0.lcssa = phi i32 [ 0, %entry ], [ %i.0.lcssa.ph, %for.end.loopexit ]
ret i32 %i.0.lcssa
}
!1 = !{!2, !2, i64 0}
!2 = !{!"int", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
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