forked from OSchip/llvm-project
393 lines
9.8 KiB
LLVM
393 lines
9.8 KiB
LLVM
; Test load/store pairs that act as memcpys.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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@g1src = dso_local global i8 1
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@g1dst = dso_local global i8 1
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@g2src = dso_local global i16 2
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@g2dst = dso_local global i16 2
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@g3 = dso_local global i32 3
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@g4 = dso_local global i64 4
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@g5src = external dso_local global fp128, align 16
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@g5dst = external dso_local global fp128, align 16
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; Test the simple i8 case.
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define dso_local void @f1(i8 *%ptr1) {
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; CHECK-LABEL: f1:
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; CHECK: mvc 1(1,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i8, i8 *%ptr1, i64 1
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%val = load i8, i8 *%ptr1
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store i8 %val, i8 *%ptr2
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ret void
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}
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; Test i8 cases where the value is zero-extended to 32 bits.
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define dso_local void @f2(i8 *%ptr1) {
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; CHECK-LABEL: f2:
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; CHECK: mvc 1(1,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i8, i8 *%ptr1, i64 1
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%val = load i8, i8 *%ptr1
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%ext = zext i8 %val to i32
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%trunc = trunc i32 %ext to i8
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store i8 %trunc, i8 *%ptr2
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ret void
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}
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; Test i8 cases where the value is zero-extended to 64 bits.
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define dso_local void @f3(i8 *%ptr1) {
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; CHECK-LABEL: f3:
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; CHECK: mvc 1(1,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i8, i8 *%ptr1, i64 1
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%val = load i8, i8 *%ptr1
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%ext = zext i8 %val to i64
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%trunc = trunc i64 %ext to i8
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store i8 %trunc, i8 *%ptr2
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ret void
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}
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; Test i8 cases where the value is sign-extended to 32 bits.
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define dso_local void @f4(i8 *%ptr1) {
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; CHECK-LABEL: f4:
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; CHECK: mvc 1(1,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i8, i8 *%ptr1, i64 1
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%val = load i8, i8 *%ptr1
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%ext = sext i8 %val to i32
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%trunc = trunc i32 %ext to i8
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store i8 %trunc, i8 *%ptr2
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ret void
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}
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; Test i8 cases where the value is sign-extended to 64 bits.
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define dso_local void @f5(i8 *%ptr1) {
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; CHECK-LABEL: f5:
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; CHECK: mvc 1(1,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i8, i8 *%ptr1, i64 1
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%val = load i8, i8 *%ptr1
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%ext = sext i8 %val to i64
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%trunc = trunc i64 %ext to i8
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store i8 %trunc, i8 *%ptr2
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ret void
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}
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; Test the simple i16 case.
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define dso_local void @f6(i16 *%ptr1) {
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; CHECK-LABEL: f6:
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; CHECK: mvc 2(2,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i16, i16 *%ptr1, i64 1
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%val = load i16, i16 *%ptr1
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store i16 %val, i16 *%ptr2
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ret void
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}
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; Test i16 cases where the value is zero-extended to 32 bits.
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define dso_local void @f7(i16 *%ptr1) {
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; CHECK-LABEL: f7:
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; CHECK: mvc 2(2,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i16, i16 *%ptr1, i64 1
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%val = load i16, i16 *%ptr1
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%ext = zext i16 %val to i32
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%trunc = trunc i32 %ext to i16
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store i16 %trunc, i16 *%ptr2
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ret void
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}
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; Test i16 cases where the value is zero-extended to 64 bits.
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define dso_local void @f8(i16 *%ptr1) {
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; CHECK-LABEL: f8:
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; CHECK: mvc 2(2,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i16, i16 *%ptr1, i64 1
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%val = load i16, i16 *%ptr1
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%ext = zext i16 %val to i64
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%trunc = trunc i64 %ext to i16
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store i16 %trunc, i16 *%ptr2
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ret void
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}
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; Test i16 cases where the value is sign-extended to 32 bits.
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define dso_local void @f9(i16 *%ptr1) {
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; CHECK-LABEL: f9:
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; CHECK: mvc 2(2,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i16, i16 *%ptr1, i64 1
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%val = load i16, i16 *%ptr1
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%ext = sext i16 %val to i32
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%trunc = trunc i32 %ext to i16
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store i16 %trunc, i16 *%ptr2
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ret void
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}
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; Test i16 cases where the value is sign-extended to 64 bits.
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define dso_local void @f10(i16 *%ptr1) {
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; CHECK-LABEL: f10:
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; CHECK: mvc 2(2,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i16, i16 *%ptr1, i64 1
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%val = load i16, i16 *%ptr1
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%ext = sext i16 %val to i64
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%trunc = trunc i64 %ext to i16
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store i16 %trunc, i16 *%ptr2
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ret void
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}
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; Test the simple i32 case.
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define dso_local void @f11(i32 *%ptr1) {
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; CHECK-LABEL: f11:
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; CHECK: mvc 4(4,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i32, i32 *%ptr1, i64 1
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%val = load i32, i32 *%ptr1
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store i32 %val, i32 *%ptr2
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ret void
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}
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; Test i32 cases where the value is zero-extended to 64 bits.
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define dso_local void @f12(i32 *%ptr1) {
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; CHECK-LABEL: f12:
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; CHECK: mvc 4(4,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i32, i32 *%ptr1, i64 1
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%val = load i32, i32 *%ptr1
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%ext = zext i32 %val to i64
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%trunc = trunc i64 %ext to i32
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store i32 %trunc, i32 *%ptr2
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ret void
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}
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; Test i32 cases where the value is sign-extended to 64 bits.
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define dso_local void @f13(i32 *%ptr1) {
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; CHECK-LABEL: f13:
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; CHECK: mvc 4(4,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i32, i32 *%ptr1, i64 1
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%val = load i32, i32 *%ptr1
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%ext = sext i32 %val to i64
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%trunc = trunc i64 %ext to i32
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store i32 %trunc, i32 *%ptr2
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ret void
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}
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; Test the i64 case.
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define dso_local void @f14(i64 *%ptr1) {
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; CHECK-LABEL: f14:
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; CHECK: mvc 8(8,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i64, i64 *%ptr1, i64 1
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%val = load i64, i64 *%ptr1
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store i64 %val, i64 *%ptr2
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ret void
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}
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; Test the f32 case.
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define dso_local void @f15(float *%ptr1) {
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; CHECK-LABEL: f15:
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; CHECK: mvc 4(4,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr float, float *%ptr1, i64 1
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%val = load float, float *%ptr1
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store float %val, float *%ptr2
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ret void
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}
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; Test the f64 case.
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define dso_local void @f16(double *%ptr1) {
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; CHECK-LABEL: f16:
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; CHECK: mvc 8(8,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr double, double *%ptr1, i64 1
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%val = load double, double *%ptr1
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store double %val, double *%ptr2
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ret void
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}
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; Test the f128 case.
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define dso_local void @f17(fp128 *%ptr1) {
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; CHECK-LABEL: f17:
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; CHECK: mvc 16(16,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr fp128, fp128 *%ptr1, i64 1
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%val = load fp128, fp128 *%ptr1
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store fp128 %val, fp128 *%ptr2
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ret void
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}
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; Make sure that we don't use MVC if the load is volatile.
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define dso_local void @f18(i64 *%ptr1) {
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; CHECK-LABEL: f18:
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; CHECK-NOT: mvc
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; CHECK: br %r14
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%ptr2 = getelementptr i64, i64 *%ptr1, i64 1
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%val = load volatile i64, i64 *%ptr1
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store i64 %val, i64 *%ptr2
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ret void
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}
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; ...likewise the store.
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define dso_local void @f19(i64 *%ptr1) {
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; CHECK-LABEL: f19:
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; CHECK-NOT: mvc
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; CHECK: br %r14
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%ptr2 = getelementptr i64, i64 *%ptr1, i64 1
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%val = load i64, i64 *%ptr1
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store volatile i64 %val, i64 *%ptr2
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ret void
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}
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; Test that MVC is not used for aligned loads and stores if there is
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; no way of telling whether they alias. We don't want to use MVC in
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; cases where the addresses could be equal.
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define dso_local void @f20(i64 *%ptr1, i64 *%ptr2) {
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; CHECK-LABEL: f20:
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; CHECK-NOT: mvc
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; CHECK: br %r14
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%val = load i64, i64 *%ptr1
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store i64 %val, i64 *%ptr2
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ret void
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}
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; ...and again for unaligned loads and stores.
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define dso_local void @f21(i64 *%ptr1, i64 *%ptr2) {
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; CHECK-LABEL: f21:
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; CHECK-NOT: mvc
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; CHECK: br %r14
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%val = load i64, i64 *%ptr1, align 2
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store i64 %val, i64 *%ptr2, align 2
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ret void
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}
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; Test a case where there is definite overlap.
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define dso_local void @f22(i64 %base) {
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; CHECK-LABEL: f22:
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; CHECK-NOT: mvc
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; CHECK: br %r14
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%add = add i64 %base, 1
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%ptr1 = inttoptr i64 %base to i64 *
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%ptr2 = inttoptr i64 %add to i64 *
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%val = load i64, i64 *%ptr1, align 1
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store i64 %val, i64 *%ptr2, align 1
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ret void
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}
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; Test that we can use MVC for global addresses for i8.
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define dso_local void @f23(i8 *%ptr) {
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; CHECK-LABEL: f23:
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; CHECK-DAG: larl [[SRC:%r[0-5]]], g1src
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; CHECK-DAG: larl [[DST:%r[0-5]]], g1dst
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; CHECK: mvc 0(1,[[DST]]), 0([[SRC]])
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; CHECK: br %r14
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%val = load i8, i8 *@g1src
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store i8 %val, i8 *@g1dst
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ret void
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}
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; Test that we use LHRL and STHRL for i16.
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define dso_local void @f24(i16 *%ptr) {
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; CHECK-LABEL: f24:
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; CHECK: lhrl [[REG:%r[0-5]]], g2src
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; CHECK: sthrl [[REG]], g2dst
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; CHECK: br %r14
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%val = load i16, i16 *@g2src
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store i16 %val, i16 *@g2dst
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ret void
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}
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; Test that we use LRL for i32.
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define dso_local void @f25(i32 *%ptr) {
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; CHECK-LABEL: f25:
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; CHECK: lrl [[REG:%r[0-5]]], g3
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; CHECK: st [[REG]], 0(%r2)
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; CHECK: br %r14
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%val = load i32, i32 *@g3
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store i32 %val, i32 *%ptr
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ret void
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}
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; ...likewise STRL.
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define dso_local void @f26(i32 *%ptr) {
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; CHECK-LABEL: f26:
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; CHECK: l [[REG:%r[0-5]]], 0(%r2)
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; CHECK: strl [[REG]], g3
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; CHECK: br %r14
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%val = load i32, i32 *%ptr
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store i32 %val, i32 *@g3
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ret void
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}
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; Test that we use LGRL for i64.
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define dso_local void @f27(i64 *%ptr) {
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; CHECK-LABEL: f27:
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; CHECK: lgrl [[REG:%r[0-5]]], g4
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; CHECK: stg [[REG]], 0(%r2)
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; CHECK: br %r14
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%val = load i64, i64 *@g4
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store i64 %val, i64 *%ptr
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ret void
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}
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; ...likewise STGRL.
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define dso_local void @f28(i64 *%ptr) {
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; CHECK-LABEL: f28:
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; CHECK: lg [[REG:%r[0-5]]], 0(%r2)
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; CHECK: stgrl [[REG]], g4
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; CHECK: br %r14
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%val = load i64, i64 *%ptr
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store i64 %val, i64 *@g4
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ret void
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}
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; Test that we can use MVC for global addresses for fp128.
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define dso_local void @f29(fp128 *%ptr) {
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; CHECK-LABEL: f29:
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; CHECK-DAG: larl [[SRC:%r[0-5]]], g5src
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; CHECK-DAG: larl [[DST:%r[0-5]]], g5dst
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; CHECK: mvc 0(16,[[DST]]), 0([[SRC]])
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; CHECK: br %r14
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%val = load fp128, fp128 *@g5src, align 16
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store fp128 %val, fp128 *@g5dst, align 16
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ret void
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}
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; Test a case where offset disambiguation is enough.
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define dso_local void @f30(i64 *%ptr1) {
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; CHECK-LABEL: f30:
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; CHECK: mvc 8(8,%r2), 0(%r2)
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; CHECK: br %r14
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%ptr2 = getelementptr i64, i64 *%ptr1, i64 1
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%val = load i64, i64 *%ptr1, align 1
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store i64 %val, i64 *%ptr2, align 1
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ret void
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}
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; Test f21 in cases where TBAA tells us there is no alias.
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define dso_local void @f31(i64 *%ptr1, i64 *%ptr2) {
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; CHECK-LABEL: f31:
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; CHECK: mvc 0(8,%r3), 0(%r2)
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; CHECK: br %r14
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%val = load i64, i64 *%ptr1, align 2, !tbaa !1
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store i64 %val, i64 *%ptr2, align 2, !tbaa !2
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ret void
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}
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; Test f21 in cases where TBAA is present but doesn't help.
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define dso_local void @f32(i64 *%ptr1, i64 *%ptr2) {
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; CHECK-LABEL: f32:
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; CHECK-NOT: mvc
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; CHECK: br %r14
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%val = load i64, i64 *%ptr1, align 2, !tbaa !1
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store i64 %val, i64 *%ptr2, align 2, !tbaa !1
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ret void
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}
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!0 = !{ !"root" }
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!1 = !{ !3, !3, i64 0 }
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!2 = !{ !4, !4, i64 0 }
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!3 = !{ !"set1", !0 }
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!4 = !{ !"set2", !0 }
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