memintrinsics.ll
2.52 KB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -dse -enable-dse-memoryssa=false < %s | FileCheck %s
declare void @llvm.memcpy.p0i8.p0i8.i8(i8* nocapture, i8* nocapture, i8, i1) nounwind
declare void @llvm.memmove.p0i8.p0i8.i8(i8* nocapture, i8* nocapture, i8, i1) nounwind
declare void @llvm.memset.p0i8.i8(i8* nocapture, i8, i8, i1) nounwind
define void @test1() {
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret void
;
%A = alloca i8
%B = alloca i8
store i8 0, i8* %A ;; Written to by memcpy
call void @llvm.memcpy.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i1 false)
ret void
}
define void @test2() {
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret void
;
%A = alloca i8
%B = alloca i8
store i8 0, i8* %A ;; Written to by memmove
call void @llvm.memmove.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i1 false)
ret void
}
define void @test3() {
; CHECK-LABEL: @test3(
; CHECK-NEXT: ret void
;
%A = alloca i8
store i8 0, i8* %A ;; Written to by memset
call void @llvm.memset.p0i8.i8(i8* %A, i8 0, i8 -1, i1 false)
ret void
}
declare void @llvm.memcpy.element.unordered.atomic.p0i16.p0i16.i16(i16* nocapture, i16* nocapture, i16, i32) nounwind
declare void @llvm.memmove.element.unordered.atomic.p0i16.p0i16.i16(i16* nocapture, i16* nocapture, i16, i32) nounwind
declare void @llvm.memset.element.unordered.atomic.p0i16.i16(i16* nocapture, i8, i16, i32) nounwind
define void @test4() {
; CHECK-LABEL: @test4(
; CHECK-NEXT: ret void
;
%A = alloca i16, i16 1024, align 2
%B = alloca i16, i16 1024, align 2
store atomic i16 0, i16* %A unordered, align 2 ;; Written to by memcpy
store atomic i16 0, i16* %B unordered, align 2 ;; Read by memcpy
call void @llvm.memcpy.element.unordered.atomic.p0i16.p0i16.i16(i16* align 2 %A, i16* align 2 %B, i16 1024, i32 2)
ret void
}
define void @test5() {
; CHECK-LABEL: @test5(
; CHECK-NEXT: ret void
;
%A = alloca i16, i16 1024, align 2
%B = alloca i16, i16 1024, align 2
store atomic i16 0, i16* %A unordered, align 2 ;; Written to by memmove
store atomic i16 0, i16* %B unordered, align 2 ;; Read by memmove
call void @llvm.memmove.element.unordered.atomic.p0i16.p0i16.i16(i16* align 2 %A, i16* align 2 %B, i16 1024, i32 2)
ret void
}
define void @test6() {
; CHECK-LABEL: @test6(
; CHECK-NEXT: ret void
;
%A = alloca i16, i16 1024, align 2
store atomic i16 0, i16* %A unordered, align 2 ;; Written to by memset
call void @llvm.memset.element.unordered.atomic.p0i16.i16(i16* align 2 %A, i8 0, i16 1024, i32 2)
ret void
}