Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/InstCombine/memcpy-to-load.ll

@@ -1,87 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -instcombine -S                         | FileCheck %s --check-prefix=ALL --check-prefix=NODL
-; RUN: opt < %s -instcombine -S -data-layout=n32        | FileCheck %s --check-prefix=ALL --check-prefix=I32
-; RUN: opt < %s -instcombine -S -data-layout=n32:64     | FileCheck %s --check-prefix=ALL --check-prefix=I64
-; RUN: opt < %s -instcombine -S -data-layout=n32:64:128 | FileCheck %s --check-prefix=ALL --check-prefix=I128
-
-declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
-
-; memcpy can be expanded inline with load/store (based on the datalayout?)
-
-define void @copy_1_byte(i8* %d, i8* %s) {
-; ALL-LABEL: @copy_1_byte(
-; ALL-NEXT:    [[TMP1:%.*]] = load i8, i8* [[S:%.*]], align 1
-; ALL-NEXT:    store i8 [[TMP1]], i8* [[D:%.*]], align 1
-; ALL-NEXT:    ret void
-;
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 1, i32 1, i1 false)
-  ret void
-}
-
-define void @copy_2_bytes(i8* %d, i8* %s) {
-; ALL-LABEL: @copy_2_bytes(
-; ALL-NEXT:    [[TMP1:%.*]] = bitcast i8* [[S:%.*]] to i16*
-; ALL-NEXT:    [[TMP2:%.*]] = bitcast i8* [[D:%.*]] to i16*
-; ALL-NEXT:    [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 1
-; ALL-NEXT:    store i16 [[TMP3]], i16* [[TMP2]], align 1
-; ALL-NEXT:    ret void
-;
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 2, i32 1, i1 false)
-  ret void
-}
-
-; We don't expand small non-power-of-2. Should we? Might be a target-dependent choice.
-
-define void @copy_3_bytes(i8* %d, i8* %s) {
-; ALL-LABEL: @copy_3_bytes(
-; ALL-NEXT:    call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[D:%.*]], i8* [[S:%.*]], i32 3, i32 1, i1 false)
-; ALL-NEXT:    ret void
-;
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 3, i32 1, i1 false)
-  ret void
-}
-
-define void @copy_4_bytes(i8* %d, i8* %s) {
-; ALL-LABEL: @copy_4_bytes(
-; ALL-NEXT:    [[TMP1:%.*]] = bitcast i8* [[S:%.*]] to i32*
-; ALL-NEXT:    [[TMP2:%.*]] = bitcast i8* [[D:%.*]] to i32*
-; ALL-NEXT:    [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 1
-; ALL-NEXT:    store i32 [[TMP3]], i32* [[TMP2]], align 1
-; ALL-NEXT:    ret void
-;
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 4, i32 1, i1 false)
-  ret void
-}
-
-; We don't expand small non-power-of-2. Should we? Might be a target-dependent choice.
-
-define void @copy_5_bytes(i8* %d, i8* %s) {
-; ALL-LABEL: @copy_5_bytes(
-; ALL-NEXT:    call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[D:%.*]], i8* [[S:%.*]], i32 5, i32 1, i1 false)
-; ALL-NEXT:    ret void
-;
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 5, i32 1, i1 false)
-  ret void
-}
-
-define void @copy_8_bytes(i8* %d, i8* %s) {
-; ALL-LABEL: @copy_8_bytes(
-; ALL-NEXT:    [[TMP1:%.*]] = bitcast i8* [[S:%.*]] to i64*
-; ALL-NEXT:    [[TMP2:%.*]] = bitcast i8* [[D:%.*]] to i64*
-; ALL-NEXT:    [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 1
-; ALL-NEXT:    store i64 [[TMP3]], i64* [[TMP2]], align 1
-; ALL-NEXT:    ret void
-;
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 8, i32 1, i1 false)
-  ret void
-}
-
-define void @copy_16_bytes(i8* %d, i8* %s) {
-; ALL-LABEL: @copy_16_bytes(
-; ALL-NEXT:    call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[D:%.*]], i8* [[S:%.*]], i32 16, i32 1, i1 false)
-; ALL-NEXT:    ret void
-;
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 16, i32 1, i1 false)
-  ret void
-}
-