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|
; Test moves of integers to byte memory locations.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check the low end of the unsigned range.
define void @f1(ptr %ptr) {
; CHECK-LABEL: f1:
; CHECK: mvi 0(%r2), 0
; CHECK: br %r14
store i8 0, ptr %ptr
ret void
}
; Check the high end of the signed range.
define void @f2(ptr %ptr) {
; CHECK-LABEL: f2:
; CHECK: mvi 0(%r2), 127
; CHECK: br %r14
store i8 127, ptr %ptr
ret void
}
; Check the next value up.
define void @f3(ptr %ptr) {
; CHECK-LABEL: f3:
; CHECK: mvi 0(%r2), 128
; CHECK: br %r14
store i8 -128, ptr %ptr
ret void
}
; Check the high end of the unsigned range.
define void @f4(ptr %ptr) {
; CHECK-LABEL: f4:
; CHECK: mvi 0(%r2), 255
; CHECK: br %r14
store i8 255, ptr %ptr
ret void
}
; Check -1.
define void @f5(ptr %ptr) {
; CHECK-LABEL: f5:
; CHECK: mvi 0(%r2), 255
; CHECK: br %r14
store i8 -1, ptr %ptr
ret void
}
; Check the low end of the signed range.
define void @f6(ptr %ptr) {
; CHECK-LABEL: f6:
; CHECK: mvi 0(%r2), 128
; CHECK: br %r14
store i8 -128, ptr %ptr
ret void
}
; Check the next value down.
define void @f7(ptr %ptr) {
; CHECK-LABEL: f7:
; CHECK: mvi 0(%r2), 127
; CHECK: br %r14
store i8 -129, ptr %ptr
ret void
}
; Check the high end of the MVI range.
define void @f8(ptr %src) {
; CHECK-LABEL: f8:
; CHECK: mvi 4095(%r2), 42
; CHECK: br %r14
%ptr = getelementptr i8, ptr %src, i64 4095
store i8 42, ptr %ptr
ret void
}
; Check the next byte up, which should use MVIY instead of MVI.
define void @f9(ptr %src) {
; CHECK-LABEL: f9:
; CHECK: mviy 4096(%r2), 42
; CHECK: br %r14
%ptr = getelementptr i8, ptr %src, i64 4096
store i8 42, ptr %ptr
ret void
}
; Check the high end of the MVIY range.
define void @f10(ptr %src) {
; CHECK-LABEL: f10:
; CHECK: mviy 524287(%r2), 42
; CHECK: br %r14
%ptr = getelementptr i8, ptr %src, i64 524287
store i8 42, ptr %ptr
ret void
}
; Check the next byte up, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f11(ptr %src) {
; CHECK-LABEL: f11:
; CHECK: agfi %r2, 524288
; CHECK: mvi 0(%r2), 42
; CHECK: br %r14
%ptr = getelementptr i8, ptr %src, i64 524288
store i8 42, ptr %ptr
ret void
}
; Check the high end of the negative MVIY range.
define void @f12(ptr %src) {
; CHECK-LABEL: f12:
; CHECK: mviy -1(%r2), 42
; CHECK: br %r14
%ptr = getelementptr i8, ptr %src, i64 -1
store i8 42, ptr %ptr
ret void
}
; Check the low end of the MVIY range.
define void @f13(ptr %src) {
; CHECK-LABEL: f13:
; CHECK: mviy -524288(%r2), 42
; CHECK: br %r14
%ptr = getelementptr i8, ptr %src, i64 -524288
store i8 42, ptr %ptr
ret void
}
; Check the next byte down, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f14(ptr %src) {
; CHECK-LABEL: f14:
; CHECK: agfi %r2, -524289
; CHECK: mvi 0(%r2), 42
; CHECK: br %r14
%ptr = getelementptr i8, ptr %src, i64 -524289
store i8 42, ptr %ptr
ret void
}
; Check that MVI does not allow an index. We prefer STC in that case.
define void @f15(i64 %src, i64 %index) {
; CHECK-LABEL: f15:
; CHECK: lhi [[TMP:%r[0-5]]], 42
; CHECK: stc [[TMP]], 4095({{%r2,%r3|%r3,%r2}}
; CHECK: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 4095
%ptr = inttoptr i64 %add2 to ptr
store i8 42, ptr %ptr
ret void
}
; Check that MVIY does not allow an index. We prefer STCY in that case.
define void @f16(i64 %src, i64 %index) {
; CHECK-LABEL: f16:
; CHECK: lhi [[TMP:%r[0-5]]], 42
; CHECK: stcy [[TMP]], 4096({{%r2,%r3|%r3,%r2}}
; CHECK: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 4096
%ptr = inttoptr i64 %add2 to ptr
store i8 42, ptr %ptr
ret void
}
|
