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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S 2>&1 | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
; We are really checking that this doesn't loop forever. We would never
; actually get to the checks here if it did.
define void @timeout(ptr nocapture readonly %cinfo, ptr %ptr) {
; CHECK-LABEL: @timeout(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[ARRAYIDX15:%.*]] = getelementptr inbounds i16, ptr [[CINFO:%.*]], i32 2
; CHECK-NEXT: [[L:%.*]] = load i16, ptr [[ARRAYIDX15]], align 2
; CHECK-NEXT: [[CMP17:%.*]] = icmp eq i16 [[L]], 0
; CHECK-NEXT: [[EXTRACT_T1:%.*]] = trunc i16 [[L]] to i8
; CHECK-NEXT: br i1 [[CMP17]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[DOTPRE:%.*]] = load i16, ptr [[ARRAYIDX15]], align 2
; CHECK-NEXT: [[EXTRACT_T:%.*]] = trunc i16 [[DOTPRE]] to i8
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[P_OFF0:%.*]] = phi i8 [ [[EXTRACT_T]], [[IF_THEN]] ], [ [[EXTRACT_T1]], [[FOR_BODY]] ]
; CHECK-NEXT: [[SUB:%.*]] = add i8 [[P_OFF0]], -1
; CHECK-NEXT: store i8 [[SUB]], ptr [[PTR:%.*]], align 1
; CHECK-NEXT: br label [[FOR_BODY]]
;
entry:
br label %for.body
for.body:
%arrayidx15 = getelementptr inbounds i16, ptr %cinfo, i32 2
%l = load i16, ptr %arrayidx15, align 2
%cmp17 = icmp eq i16 %l, 0
br i1 %cmp17, label %if.then, label %if.end
if.then:
%.pre = load i16, ptr %arrayidx15, align 2
br label %if.end
if.end:
%p = phi i16 [ %.pre, %if.then ], [ %l, %for.body ]
%conv19 = trunc i16 %p to i8
%sub = add i8 %conv19, -1
store i8 %sub, ptr %ptr, align 1
br label %for.body
}
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