;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
-@g1 = global i8 1
-@g2 = global i16 2
+@g1src = global i8 1
+@g1dst = global i8 1
+@g2src = global i16 2
+@g2dst = global i16 2
@g3 = global i32 3
@g4 = global i64 4
-@g5 = external global fp128, align 16
+@g5src = external global fp128, align 16
+@g5dst = external global fp128, align 16
; Test the simple i8 case.
define void @f1(i8 *%ptr1) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
; CHECK: mvc 1(1,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i8 *%ptr1, i64 1
; Test i8 cases where the value is zero-extended to 32 bits.
define void @f2(i8 *%ptr1) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
; CHECK: mvc 1(1,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i8 *%ptr1, i64 1
; Test i8 cases where the value is zero-extended to 64 bits.
define void @f3(i8 *%ptr1) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
; CHECK: mvc 1(1,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i8 *%ptr1, i64 1
; Test i8 cases where the value is sign-extended to 32 bits.
define void @f4(i8 *%ptr1) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
; CHECK: mvc 1(1,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i8 *%ptr1, i64 1
; Test i8 cases where the value is sign-extended to 64 bits.
define void @f5(i8 *%ptr1) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
; CHECK: mvc 1(1,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i8 *%ptr1, i64 1
; Test the simple i16 case.
define void @f6(i16 *%ptr1) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
; CHECK: mvc 2(2,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i16 *%ptr1, i64 1
; Test i16 cases where the value is zero-extended to 32 bits.
define void @f7(i16 *%ptr1) {
-; CHECK: f7:
+; CHECK-LABEL: f7:
; CHECK: mvc 2(2,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i16 *%ptr1, i64 1
; Test i16 cases where the value is zero-extended to 64 bits.
define void @f8(i16 *%ptr1) {
-; CHECK: f8:
+; CHECK-LABEL: f8:
; CHECK: mvc 2(2,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i16 *%ptr1, i64 1
; Test i16 cases where the value is sign-extended to 32 bits.
define void @f9(i16 *%ptr1) {
-; CHECK: f9:
+; CHECK-LABEL: f9:
; CHECK: mvc 2(2,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i16 *%ptr1, i64 1
; Test i16 cases where the value is sign-extended to 64 bits.
define void @f10(i16 *%ptr1) {
-; CHECK: f10:
+; CHECK-LABEL: f10:
; CHECK: mvc 2(2,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i16 *%ptr1, i64 1
; Test the simple i32 case.
define void @f11(i32 *%ptr1) {
-; CHECK: f11:
+; CHECK-LABEL: f11:
; CHECK: mvc 4(4,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i32 *%ptr1, i64 1
; Test i32 cases where the value is zero-extended to 64 bits.
define void @f12(i32 *%ptr1) {
-; CHECK: f12:
+; CHECK-LABEL: f12:
; CHECK: mvc 4(4,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i32 *%ptr1, i64 1
; Test i32 cases where the value is sign-extended to 64 bits.
define void @f13(i32 *%ptr1) {
-; CHECK: f13:
+; CHECK-LABEL: f13:
; CHECK: mvc 4(4,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i32 *%ptr1, i64 1
; Test the i64 case.
define void @f14(i64 *%ptr1) {
-; CHECK: f14:
+; CHECK-LABEL: f14:
; CHECK: mvc 8(8,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i64 *%ptr1, i64 1
; Test the f32 case.
define void @f15(float *%ptr1) {
-; CHECK: f15:
+; CHECK-LABEL: f15:
; CHECK: mvc 4(4,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr float *%ptr1, i64 1
; Test the f64 case.
define void @f16(double *%ptr1) {
-; CHECK: f16:
+; CHECK-LABEL: f16:
; CHECK: mvc 8(8,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr double *%ptr1, i64 1
; Test the f128 case.
define void @f17(fp128 *%ptr1) {
-; CHECK: f17:
+; CHECK-LABEL: f17:
; CHECK: mvc 16(16,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr fp128 *%ptr1, i64 1
; Make sure that we don't use MVC if the load is volatile.
define void @f18(i64 *%ptr1) {
-; CHECK: f18:
+; CHECK-LABEL: f18:
; CHECK-NOT: mvc
; CHECK: br %r14
%ptr2 = getelementptr i64 *%ptr1, i64 1
; ...likewise the store.
define void @f19(i64 *%ptr1) {
-; CHECK: f19:
+; CHECK-LABEL: f19:
; CHECK-NOT: mvc
; CHECK: br %r14
%ptr2 = getelementptr i64 *%ptr1, i64 1
ret void
}
-; Test that MVC is used for aligned loads and stores, even if there is
-; no way of telling whether they alias.
+; Test that MVC is not used for aligned loads and stores if there is
+; no way of telling whether they alias. We don't want to use MVC in
+; cases where the addresses could be equal.
define void @f20(i64 *%ptr1, i64 *%ptr2) {
-; CHECK: f20:
-; CHECK: mvc 0(8,%r3), 0(%r2)
+; CHECK-LABEL: f20:
+; CHECK-NOT: mvc
; CHECK: br %r14
%val = load i64 *%ptr1
store i64 %val, i64 *%ptr2
ret void
}
-; ...but if the loads aren't aligned, we can't be sure.
+; ...and again for unaligned loads and stores.
define void @f21(i64 *%ptr1, i64 *%ptr2) {
-; CHECK: f21:
+; CHECK-LABEL: f21:
; CHECK-NOT: mvc
; CHECK: br %r14
%val = load i64 *%ptr1, align 2
; Test a case where there is definite overlap.
define void @f22(i64 %base) {
-; CHECK: f22:
+; CHECK-LABEL: f22:
; CHECK-NOT: mvc
; CHECK: br %r14
%add = add i64 %base, 1
; Test that we can use MVC for global addresses for i8.
define void @f23(i8 *%ptr) {
-; CHECK: f23:
-; CHECK: larl [[REG:%r[0-5]]], g1
-; CHECK: mvc 0(1,%r2), 0([[REG]])
-; CHECK: br %r14
- %val = load i8 *@g1
- store i8 %val, i8 *%ptr
- ret void
-}
-
-; ...and again with the global on the store.
-define void @f24(i8 *%ptr) {
-; CHECK: f24:
-; CHECK: larl [[REG:%r[0-5]]], g1
-; CHECK: mvc 0(1,[[REG]]), 0(%r2)
-; CHECK: br %r14
- %val = load i8 *%ptr
- store i8 %val, i8 *@g1
- ret void
-}
-
-; Test that we use LHRL for i16.
-define void @f25(i16 *%ptr) {
-; CHECK: f25:
-; CHECK: lhrl [[REG:%r[0-5]]], g2
-; CHECK: sth [[REG]], 0(%r2)
+; CHECK-LABEL: f23:
+; CHECK-DAG: larl [[SRC:%r[0-5]]], g1src
+; CHECK-DAG: larl [[DST:%r[0-5]]], g1dst
+; CHECK: mvc 0(1,[[DST]]), 0([[SRC]])
; CHECK: br %r14
- %val = load i16 *@g2
- store i16 %val, i16 *%ptr
+ %val = load i8 *@g1src
+ store i8 %val, i8 *@g1dst
ret void
}
-; ...likewise STHRL.
-define void @f26(i16 *%ptr) {
-; CHECK: f26:
-; CHECK: lh [[REG:%r[0-5]]], 0(%r2)
-; CHECK: sthrl [[REG]], g2
+; Test that we use LHRL and STHRL for i16.
+define void @f24(i16 *%ptr) {
+; CHECK-LABEL: f24:
+; CHECK: lhrl [[REG:%r[0-5]]], g2src
+; CHECK: sthrl [[REG]], g2dst
; CHECK: br %r14
- %val = load i16 *%ptr
- store i16 %val, i16 *@g2
+ %val = load i16 *@g2src
+ store i16 %val, i16 *@g2dst
ret void
}
; Test that we use LRL for i32.
-define void @f27(i32 *%ptr) {
-; CHECK: f27:
+define void @f25(i32 *%ptr) {
+; CHECK-LABEL: f25:
; CHECK: lrl [[REG:%r[0-5]]], g3
; CHECK: st [[REG]], 0(%r2)
; CHECK: br %r14
}
; ...likewise STRL.
-define void @f28(i32 *%ptr) {
-; CHECK: f28:
+define void @f26(i32 *%ptr) {
+; CHECK-LABEL: f26:
; CHECK: l [[REG:%r[0-5]]], 0(%r2)
; CHECK: strl [[REG]], g3
; CHECK: br %r14
}
; Test that we use LGRL for i64.
-define void @f29(i64 *%ptr) {
-; CHECK: f29:
+define void @f27(i64 *%ptr) {
+; CHECK-LABEL: f27:
; CHECK: lgrl [[REG:%r[0-5]]], g4
; CHECK: stg [[REG]], 0(%r2)
; CHECK: br %r14
}
; ...likewise STGRL.
-define void @f30(i64 *%ptr) {
-; CHECK: f30:
+define void @f28(i64 *%ptr) {
+; CHECK-LABEL: f28:
; CHECK: lg [[REG:%r[0-5]]], 0(%r2)
; CHECK: stgrl [[REG]], g4
; CHECK: br %r14
}
; Test that we can use MVC for global addresses for fp128.
-define void @f31(fp128 *%ptr) {
-; CHECK: f31:
-; CHECK: larl [[REG:%r[0-5]]], g5
-; CHECK: mvc 0(16,%r2), 0([[REG]])
-; CHECK: br %r14
- %val = load fp128 *@g5, align 16
- store fp128 %val, fp128 *%ptr, align 16
- ret void
-}
-
-; ...and again with the global on the store.
-define void @f32(fp128 *%ptr) {
-; CHECK: f32:
-; CHECK: larl [[REG:%r[0-5]]], g5
-; CHECK: mvc 0(16,[[REG]]), 0(%r2)
+define void @f29(fp128 *%ptr) {
+; CHECK-LABEL: f29:
+; CHECK-DAG: larl [[SRC:%r[0-5]]], g5src
+; CHECK-DAG: larl [[DST:%r[0-5]]], g5dst
+; CHECK: mvc 0(16,[[DST]]), 0([[SRC]])
; CHECK: br %r14
- %val = load fp128 *%ptr, align 16
- store fp128 %val, fp128 *@g5, align 16
+ %val = load fp128 *@g5src, align 16
+ store fp128 %val, fp128 *@g5dst, align 16
ret void
}
; Test a case where offset disambiguation is enough.
-define void @f33(i64 *%ptr1) {
-; CHECK: f33:
+define void @f30(i64 *%ptr1) {
+; CHECK-LABEL: f30:
; CHECK: mvc 8(8,%r2), 0(%r2)
; CHECK: br %r14
%ptr2 = getelementptr i64 *%ptr1, i64 1
}
; Test f21 in cases where TBAA tells us there is no alias.
-define void @f34(i64 *%ptr1, i64 *%ptr2) {
-; CHECK: f34:
+define void @f31(i64 *%ptr1, i64 *%ptr2) {
+; CHECK-LABEL: f31:
; CHECK: mvc 0(8,%r3), 0(%r2)
; CHECK: br %r14
%val = load i64 *%ptr1, align 2, !tbaa !1
}
; Test f21 in cases where TBAA is present but doesn't help.
-define void @f35(i64 *%ptr1, i64 *%ptr2) {
-; CHECK: f35:
+define void @f32(i64 *%ptr1, i64 *%ptr2) {
+; CHECK-LABEL: f32:
; CHECK-NOT: mvc
; CHECK: br %r14
%val = load i64 *%ptr1, align 2, !tbaa !1
}
!0 = metadata !{ metadata !"root" }
-!1 = metadata !{ metadata !"set1", metadata !0 }
-!2 = metadata !{ metadata !"set2", metadata !0 }
+!1 = metadata !{ metadata !3, metadata !3, i64 0 }
+!2 = metadata !{ metadata !4, metadata !4, i64 0 }
+!3 = metadata !{ metadata !"set1", metadata !0 }
+!4 = metadata !{ metadata !"set2", metadata !0 }
projects / oota-llvm.git / blobdiff