forked from OSchip/llvm-project
57 lines
1.6 KiB
LLVM
57 lines
1.6 KiB
LLVM
; RUN: opt -S -basicaa -newgvn < %s | FileCheck %s
|
|
; RUN: opt -S -basicaa -newgvn -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 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 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
|
|
}
|