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