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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=licm -S < %s | FileCheck %s
;; C reproducer:
;; void f(int *ptr, int n) {
;; for (int i = 0; i < n; ++i) {
;; int x = *ptr;
;; if (x)
;; break;
;;
;; *ptr = x + 1;
;; }
;; }
define dso_local void @f(ptr nocapture %ptr, i32 %n) {
; CHECK-LABEL: @f(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP7:%.*]] = icmp slt i32 0, [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP7]], label [[FOR_BODY_LR_PH:%.*]], label [[CLEANUP1:%.*]]
; CHECK: for.body.lr.ph:
; CHECK-NEXT: [[PTR_PROMOTED:%.*]] = load i32, ptr [[PTR:%.*]], align 4
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ [[PTR_PROMOTED]], [[FOR_BODY_LR_PH]] ], [ 1, [[IF_END:%.*]] ]
; CHECK-NEXT: [[I_08:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END]] ]
; CHECK-NEXT: [[TOBOOL_NOT:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT: br i1 [[TOBOOL_NOT]], label [[IF_END]], label [[FOR_BODY_CLEANUP1_CRIT_EDGE:%.*]]
; CHECK: if.end:
; CHECK-NEXT: store i32 1, ptr [[PTR]], align 4
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_08]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], [[N]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP1_CRIT_EDGE:%.*]]
; CHECK: for.body.cleanup1_crit_edge:
; CHECK-NEXT: br label [[CLEANUP1]]
; CHECK: for.cond.cleanup1_crit_edge:
; CHECK-NEXT: br label [[CLEANUP1]]
; CHECK: cleanup1:
; CHECK-NEXT: ret void
;
entry:
%cmp7 = icmp slt i32 0, %n
br i1 %cmp7, label %for.body.lr.ph, label %cleanup1
for.body.lr.ph: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.lr.ph, %if.end
%i.08 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end ]
%0 = load i32, ptr %ptr, align 4
%tobool.not = icmp eq i32 %0, 0
br i1 %tobool.not, label %if.end, label %for.body.cleanup1_crit_edge
if.end: ; preds = %for.body
store i32 1, ptr %ptr, align 4
%inc = add nuw nsw i32 %i.08, 1
%cmp = icmp slt i32 %inc, %n
br i1 %cmp, label %for.body, label %for.cond.cleanup1_crit_edge
for.body.cleanup1_crit_edge: ; preds = %for.body
br label %cleanup1
for.cond.cleanup1_crit_edge: ; preds = %if.end
br label %cleanup1
cleanup1: ; preds = %for.cond.cleanup1_crit_edge, %for.body.cleanup1_crit_edge, %entry
ret void
}
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