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; RUN: opt -S -basic-aa -gvn < %s | FileCheck %s
; RUN: opt -S -basic-aa -gvn -disable-simplify-libcalls < %s | FileCheck %s -check-prefix=CHECK_NO_LIBCALLS
; PR13694
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"
target triple = "x86_64-apple-macosx10.8.0"
declare noalias i8* @malloc(i64) nounwind
define noalias i8* @test1() nounwind uwtable ssp {
entry:
%call = tail call i8* @malloc(i64 100) nounwind
%0 = load i8, i8* %call, align 1
%tobool = icmp eq i8 %0, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
store i8 0, i8* %call, align 1
br label %if.end
if.end: ; preds = %if.then, %entry
ret i8* %call
; CHECK-LABEL: @test1(
; CHECK-NOT: load
; CHECK-NOT: icmp
; CHECK_NO_LIBCALLS-LABEL: @test1(
; CHECK_NO_LIBCALLS: load
; CHECK_NO_LIBCALLS: icmp
}
declare noalias i8* @_Znwm(i64) nounwind
define noalias i8* @test2() nounwind uwtable ssp {
entry:
%call = tail call i8* @_Znwm(i64 100) nounwind
%0 = load i8, i8* %call, align 1
%tobool = icmp eq i8 %0, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
store i8 0, i8* %call, align 1
br label %if.end
if.end: ; preds = %if.then, %entry
ret i8* %call
; CHECK-LABEL: @test2(
; CHECK-NOT: load
; CHECK-NOT: icmp
; CHECK_NO_LIBCALLS-LABEL: @test2(
; CHECK_NO_LIBCALLS: load
; CHECK_NO_LIBCALLS: icmp
}
declare noalias i8* @aligned_alloc(i64, i64) nounwind
define noalias i8* @test3() nounwind uwtable ssp {
entry:
%call = tail call i8* @aligned_alloc(i64 256, i64 32) nounwind
%0 = load i8, i8* %call, align 32
%tobool = icmp eq i8 %0, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
store i8 0, i8* %call, align 1
br label %if.end
if.end: ; preds = %if.then, %entry
ret i8* %call
; CHECK-LABEL: @test3(
; CHECK-NOT: load
; CHECK-NOT: icmp
; CHECK_NO_LIBCALLS-LABEL: @test3(
; CHECK_NO_LIBCALLS: load
; CHECK_NO_LIBCALLS: icmp
}
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