android_mt6572_jiabo/external/llvm/test/Analysis/GlobalsModRef/argmemonly-escape.ll
2025-09-05 16:56:03 +08:00

47 lines
1.7 KiB
LLVM

; RUN: opt < %s -O1 -S -enable-non-lto-gmr=true | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.10.0"
@a = internal global [3 x i32] zeroinitializer, align 4
; The important thing we're checking for here is the reload of (some element of)
; @a after the memset.
; CHECK-LABEL: @main
; CHECK: load i32, i32* getelementptr {{.*}} @a
; CHECK-NEXT: call void @memsetp0i8i64{{.*}} @a
; CHECK-NEXT: load i32, i32* getelementptr {{.*}} @a
; CHECK-NEXT: call void @memsetp0i8i64A{{.*}} @a
; CHECK-NEXT: load i32, i32* getelementptr {{.*}} @a
; CHECK: icmp eq
; CHECK: br i1
define i32 @main() {
entry:
%0 = bitcast [3 x i32]* @a to i8*
%1 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
call void @memsetp0i8i64(i8* %0, i8 0, i64 4, i32 4, i1 false)
%2 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
call void @memsetp0i8i64A(i8* %0, i8 0, i64 4, i32 4, i1 false)
%3 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @a, i64 0, i64 2), align 4
%4 = add i32 %2, %3
%cmp1 = icmp eq i32 %1, %4
br i1 %cmp1, label %if.then, label %if.end
if.then: ; preds = %entr
call void @abort() #3
unreachable
if.end: ; preds = %entry
ret i32 0
}
; Function Attrs: nounwind argmemonly
declare void @memsetp0i8i64(i8* nocapture, i8, i64, i32, i1) nounwind argmemonly
; Function Attrs: nounwind inaccessiblemem_or_argmemonly
declare void @memsetp0i8i64A(i8* nocapture, i8, i64, i32, i1) nounwind inaccessiblemem_or_argmemonly
; Function Attrs: noreturn nounwind
declare void @abort() noreturn nounwind