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- ; RUN: opt -S -basicaa -gvn < %s | FileCheck %s
- ; RUN: opt -S -basicaa -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 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
- }
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