58 lines
1.9 KiB
LLVM
58 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
|
|
; RUN: opt -passes=instcombine -S < %s | FileCheck %s
|
|
;
|
|
; Verify that instcombine preserves TBAA tags when converting a memcpy into
|
|
; a scalar load and store.
|
|
|
|
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"
|
|
|
|
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind
|
|
|
|
%A = type { float }
|
|
|
|
define void @test1(ptr %a1, ptr %a2) {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[A2:%.*]], align 4, !tbaa [[TBAA0:![0-9]+]]
|
|
; CHECK-NEXT: store i32 [[TMP0]], ptr [[A1:%.*]], align 4, !tbaa [[TBAA0]]
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a1, ptr align 4 %a2, i64 4, i1 false), !tbaa !4 ; TAG_A
|
|
ret void
|
|
}
|
|
|
|
%B = type { ptr }
|
|
|
|
define ptr @test2() {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: store i1 true, ptr poison, align 1
|
|
; CHECK-NEXT: ret ptr poison
|
|
;
|
|
%tmp = alloca %B, align 8
|
|
call void @llvm.memcpy.p0.p0.i64(ptr align 8 %tmp, ptr align 8 undef, i64 8, i1 false), !tbaa !7 ; TAG_B
|
|
%tmp3 = load ptr, ptr %tmp
|
|
ret ptr %tmp
|
|
}
|
|
|
|
!0 = !{!"root"}
|
|
!1 = !{!0, !"char"}
|
|
!2 = !{!1, !"float"}
|
|
!3 = !{!1, i64 4, !"A", !2, i64 0, i64 4}
|
|
!4 = !{!3, !3, i64 0, i64 4}
|
|
!5 = !{!1, !"pointer"}
|
|
!6 = !{!1, i64 8, !"B", !5, i64 0, i64 8}
|
|
!7 = !{!6, !6, i64 0, i64 8}
|
|
|
|
; Note that the memcpy() call in test2() transforms into an
|
|
; undecorated 'store undef', so TAG_B is not present in the output.
|
|
|
|
;.
|
|
; CHECK: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
|
|
;.
|
|
; CHECK: [[TBAA0]] = !{!1, !1, i64 0, i64 4}
|
|
; CHECK: [[META1:![0-9]+]] = !{!2, i64 4, !"A", !4, i64 0, i64 4}
|
|
; CHECK: [[META2:![0-9]+]] = !{!3, !"char"}
|
|
; CHECK: [[META3:![0-9]+]] = !{!"root"}
|
|
; CHECK: [[META4:![0-9]+]] = !{!2, !"float"}
|
|
;.
|