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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -passes=memcpyopt -verify-memoryssa | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@b = common dso_local local_unnamed_addr global i32 0, align 4
@a = common dso_local local_unnamed_addr global i32 0, align 4
declare dso_local i32 @f1()
; Do not crash due to store first in BB.
define dso_local void @f2() {
; CHECK-LABEL: @f2(
; CHECK-NEXT: for.end:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @b, align 4
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: store i32 [[TMP1:%.*]], ptr @a, align 4
; CHECK-NEXT: [[CALL:%.*]] = call i32 @f1()
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[CALL]], 0
; CHECK-NEXT: [[TMP1]] = load i32, ptr @b, align 4
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
;
for.end:
%0 = load i32, ptr @b, align 4
ret void
for.body:
store i32 %1, ptr @a, align 4
%call = call i32 @f1()
%cmp = icmp sge i32 %call, 0
%1 = load i32, ptr @b, align 4
br label %for.body
}
; Do not crash due to call not before store in BB.
define dso_local void @f3() {
; CHECK-LABEL: @f3(
; CHECK-NEXT: for.end:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @b, align 4
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: [[T:%.*]] = add i32 [[T2:%.*]], 1
; CHECK-NEXT: store i32 [[TMP1:%.*]], ptr @a, align 4
; CHECK-NEXT: [[CALL:%.*]] = call i32 @f1()
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[CALL]], 0
; CHECK-NEXT: [[TMP1]] = load i32, ptr @b, align 4
; CHECK-NEXT: [[T2]] = xor i32 [[T]], 5
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
;
for.end:
%0 = load i32, ptr @b, align 4
ret void
for.body:
%t = add i32 %t2, 1
store i32 %1, ptr @a, align 4
%call = call i32 @f1()
%cmp = icmp sge i32 %call, 0
%1 = load i32, ptr @b, align 4
%t2 = xor i32 %t, 5
br label %for.body
}
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