a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
393 lines
9.7 KiB
LLVM
393 lines
9.7 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(ptr %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, ptr %ptr1, i64 1
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%val = load i8, ptr %ptr1
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store i8 %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i8, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i8, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i8, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i8, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i16, ptr %ptr1
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store i16 %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i16, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i16, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i16, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i16, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i32, ptr %ptr1
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store i32 %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i32, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i32, ptr %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, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i64, ptr %ptr1
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store i64 %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load float, ptr %ptr1
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store float %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load double, ptr %ptr1
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store double %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load fp128, ptr %ptr1
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store fp128 %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load volatile i64, ptr %ptr1
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store i64 %val, ptr %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(ptr %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, ptr %ptr1, i64 1
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%val = load i64, ptr %ptr1
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store volatile i64 %val, ptr %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(ptr %ptr1, ptr %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, ptr %ptr1
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store i64 %val, ptr %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(ptr %ptr1, ptr %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, ptr %ptr1, align 2
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store i64 %val, ptr %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 ptr
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%ptr2 = inttoptr i64 %add to ptr
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%val = load i64, ptr %ptr1, align 1
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store i64 %val, ptr %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(ptr %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, ptr@g1src
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store i8 %val, ptr@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(ptr %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, ptr@g2src
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store i16 %val, ptr@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(ptr %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, ptr@g3
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store i32 %val, ptr %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(ptr %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, ptr %ptr
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store i32 %val, ptr@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(ptr %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, ptr@g4
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store i64 %val, ptr %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(ptr %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, ptr %ptr
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store i64 %val, ptr@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(ptr %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, ptr@g5src, align 16
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store fp128 %val, ptr@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(ptr %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, ptr %ptr1, i64 1
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%val = load i64, ptr %ptr1, align 1
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store i64 %val, ptr %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(ptr %ptr1, ptr %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, ptr %ptr1, align 2, !tbaa !1
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store i64 %val, ptr %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(ptr %ptr1, ptr %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, ptr %ptr1, align 2, !tbaa !1
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store i64 %val, ptr %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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