57 lines
1.6 KiB
LLVM
57 lines
1.6 KiB
LLVM
; RUN: opt -S -basicaa -gvn < %s | FileCheck %s
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; RUN: opt -S -basicaa -gvn -disable-simplify-libcalls < %s | FileCheck %s -check-prefix=CHECK_NO_LIBCALLS
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; PR13694
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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-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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declare i8* @malloc(i64) nounwind
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define noalias i8* @test1() nounwind uwtable ssp {
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entry:
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%call = tail call i8* @malloc(i64 100) nounwind
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%0 = load i8, i8* %call, align 1
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%tobool = icmp eq i8 %0, 0
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br i1 %tobool, label %if.end, label %if.then
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if.then: ; preds = %entry
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store i8 0, i8* %call, align 1
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret i8* %call
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; CHECK-LABEL: @test1(
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; CHECK-NOT: load
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; CHECK-NOT: icmp
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; CHECK_NO_LIBCALLS-LABEL: @test1(
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; CHECK_NO_LIBCALLS: load
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; CHECK_NO_LIBCALLS: icmp
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}
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declare i8* @_Znwm(i64) nounwind
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define noalias i8* @test2() nounwind uwtable ssp {
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entry:
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%call = tail call i8* @_Znwm(i64 100) nounwind
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%0 = load i8, i8* %call, align 1
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%tobool = icmp eq i8 %0, 0
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br i1 %tobool, label %if.end, label %if.then
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if.then: ; preds = %entry
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store i8 0, i8* %call, align 1
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret i8* %call
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; CHECK-LABEL: @test2(
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; CHECK-NOT: load
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; CHECK-NOT: icmp
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; CHECK_NO_LIBCALLS-LABEL: @test2(
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; CHECK_NO_LIBCALLS: load
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; CHECK_NO_LIBCALLS: icmp
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}
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