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; Test 128-bit addition in which the second operand is variable.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
declare i128 *@foo()
; Test register addition.
define void @f1(i128 *%ptr) {
; CHECK-LABEL: f1:
; CHECK: algr
; CHECK: alcgr
; CHECK: br %r14
%value = load i128 , i128 *%ptr
%add = add i128 %value, %value
store i128 %add, i128 *%ptr
ret void
}
; Test memory addition with no offset. Making the load of %a volatile
; should force the memory operand to be %b.
define void @f2(i128 *%aptr, i64 %addr) {
; CHECK-LABEL: f2:
; CHECK: alg {{%r[0-5]}}, 8(%r3)
; CHECK: alcg {{%r[0-5]}}, 0(%r3)
; CHECK: br %r14
%bptr = inttoptr i64 %addr to i128 *
%a = load volatile i128 , i128 *%aptr
%b = load i128 , i128 *%bptr
%add = add i128 %a, %b
store i128 %add, i128 *%aptr
ret void
}
; Test the highest aligned offset that is in range of both ALG and ALCG.
define void @f3(i128 *%aptr, i64 %base) {
; CHECK-LABEL: f3:
; CHECK: alg {{%r[0-5]}}, 524280(%r3)
; CHECK: alcg {{%r[0-5]}}, 524272(%r3)
; CHECK: br %r14
%addr = add i64 %base, 524272
%bptr = inttoptr i64 %addr to i128 *
%a = load volatile i128 , i128 *%aptr
%b = load i128 , i128 *%bptr
%add = add i128 %a, %b
store i128 %add, i128 *%aptr
ret void
}
; Test the next doubleword up, which requires separate address logic for ALG.
define void @f4(i128 *%aptr, i64 %base) {
; CHECK-LABEL: f4:
; CHECK: lgr [[BASE:%r[1-5]]], %r3
; CHECK: agfi [[BASE]], 524288
; CHECK: alg {{%r[0-5]}}, 0([[BASE]])
; CHECK: alcg {{%r[0-5]}}, 524280(%r3)
; CHECK: br %r14
%addr = add i64 %base, 524280
%bptr = inttoptr i64 %addr to i128 *
%a = load volatile i128 , i128 *%aptr
%b = load i128 , i128 *%bptr
%add = add i128 %a, %b
store i128 %add, i128 *%aptr
ret void
}
; Test the next doubleword after that, which requires separate logic for
; both instructions. It would be better to create an anchor at 524288
; that both instructions can use, but that isn't implemented yet.
define void @f5(i128 *%aptr, i64 %base) {
; CHECK-LABEL: f5:
; CHECK: alg {{%r[0-5]}}, 0({{%r[1-5]}})
; CHECK: alcg {{%r[0-5]}}, 0({{%r[1-5]}})
; CHECK: br %r14
%addr = add i64 %base, 524288
%bptr = inttoptr i64 %addr to i128 *
%a = load volatile i128 , i128 *%aptr
%b = load i128 , i128 *%bptr
%add = add i128 %a, %b
store i128 %add, i128 *%aptr
ret void
}
; Test the lowest displacement that is in range of both ALG and ALCG.
define void @f6(i128 *%aptr, i64 %base) {
; CHECK-LABEL: f6:
; CHECK: alg {{%r[0-5]}}, -524280(%r3)
; CHECK: alcg {{%r[0-5]}}, -524288(%r3)
; CHECK: br %r14
%addr = add i64 %base, -524288
%bptr = inttoptr i64 %addr to i128 *
%a = load volatile i128 , i128 *%aptr
%b = load i128 , i128 *%bptr
%add = add i128 %a, %b
store i128 %add, i128 *%aptr
ret void
}
; Test the next doubleword down, which is out of range of the ALCG.
define void @f7(i128 *%aptr, i64 %base) {
; CHECK-LABEL: f7:
; CHECK: alg {{%r[0-5]}}, -524288(%r3)
; CHECK: alcg {{%r[0-5]}}, 0({{%r[1-5]}})
; CHECK: br %r14
%addr = add i64 %base, -524296
%bptr = inttoptr i64 %addr to i128 *
%a = load volatile i128 , i128 *%aptr
%b = load i128 , i128 *%bptr
%add = add i128 %a, %b
store i128 %add, i128 *%aptr
ret void
}
; Check that additions of spilled values can use ALG and ALCG rather than
; ALGR and ALCGR.
define void @f8(i128 *%ptr0) {
; CHECK-LABEL: f8:
; CHECK: brasl %r14, foo@PLT
; CHECK: alg {{%r[0-9]+}}, {{[0-9]+}}(%r15)
; CHECK: alcg {{%r[0-9]+}}, {{[0-9]+}}(%r15)
; CHECK: br %r14
%ptr1 = getelementptr i128, i128 *%ptr0, i128 2
%ptr2 = getelementptr i128, i128 *%ptr0, i128 4
%ptr3 = getelementptr i128, i128 *%ptr0, i128 6
%ptr4 = getelementptr i128, i128 *%ptr0, i128 8
%val0 = load i128 , i128 *%ptr0
%val1 = load i128 , i128 *%ptr1
%val2 = load i128 , i128 *%ptr2
%val3 = load i128 , i128 *%ptr3
%val4 = load i128 , i128 *%ptr4
%retptr = call i128 *@foo()
%ret = load i128 , i128 *%retptr
%add0 = add i128 %ret, %val0
%add1 = add i128 %add0, %val1
%add2 = add i128 %add1, %val2
%add3 = add i128 %add2, %val3
%add4 = add i128 %add3, %val4
store i128 %add4, i128 *%retptr
ret void
}
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