Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/SystemZ/int-sub-05.ll

@@ -1,153 +0,0 @@
-; Test 128-bit subtraction 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, i64 %high, i64 %low) {
-; CHECK-LABEL: f1:
-; CHECK: slgr {{%r[0-5]}}, %r4
-; CHECK: slbgr {{%r[0-5]}}, %r3
-; CHECK: br %r14
-  %a = load i128 , i128 *%ptr
-  %highx = zext i64 %high to i128
-  %lowx = zext i64 %low to i128
-  %bhigh = shl i128 %highx, 64
-  %b = or i128 %bhigh, %lowx
-  %sub = sub i128 %a, %b
-  store i128 %sub, i128 *%ptr
-  ret void
-}
-
-; Test memory addition with no offset.
-define void @f2(i64 %addr) {
-; CHECK-LABEL: f2:
-; CHECK: slg {{%r[0-5]}}, 8(%r2)
-; CHECK: slbg {{%r[0-5]}}, 0(%r2)
-; CHECK: br %r14
-  %bptr = inttoptr i64 %addr to i128 *
-  %aptr = getelementptr i128, i128 *%bptr, i64 -8
-  %a = load i128 , i128 *%aptr
-  %b = load i128 , i128 *%bptr
-  %sub = sub i128 %a, %b
-  store i128 %sub, i128 *%aptr
-  ret void
-}
-
-; Test the highest aligned offset that is in range of both SLG and SLBG.
-define void @f3(i64 %base) {
-; CHECK-LABEL: f3:
-; CHECK: slg {{%r[0-5]}}, 524280(%r2)
-; CHECK: slbg {{%r[0-5]}}, 524272(%r2)
-; CHECK: br %r14
-  %addr = add i64 %base, 524272
-  %bptr = inttoptr i64 %addr to i128 *
-  %aptr = getelementptr i128, i128 *%bptr, i64 -8
-  %a = load i128 , i128 *%aptr
-  %b = load i128 , i128 *%bptr
-  %sub = sub i128 %a, %b
-  store i128 %sub, i128 *%aptr
-  ret void
-}
-
-; Test the next doubleword up, which requires separate address logic for SLG.
-define void @f4(i64 %base) {
-; CHECK-LABEL: f4:
-; CHECK: lgr [[BASE:%r[1-5]]], %r2
-; CHECK: agfi [[BASE]], 524288
-; CHECK: slg {{%r[0-5]}}, 0([[BASE]])
-; CHECK: slbg {{%r[0-5]}}, 524280(%r2)
-; CHECK: br %r14
-  %addr = add i64 %base, 524280
-  %bptr = inttoptr i64 %addr to i128 *
-  %aptr = getelementptr i128, i128 *%bptr, i64 -8
-  %a = load i128 , i128 *%aptr
-  %b = load i128 , i128 *%bptr
-  %sub = sub i128 %a, %b
-  store i128 %sub, 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(i64 %base) {
-; CHECK-LABEL: f5:
-; CHECK: slg {{%r[0-5]}}, 0({{%r[1-5]}})
-; CHECK: slbg {{%r[0-5]}}, 0({{%r[1-5]}})
-; CHECK: br %r14
-  %addr = add i64 %base, 524288
-  %bptr = inttoptr i64 %addr to i128 *
-  %aptr = getelementptr i128, i128 *%bptr, i64 -8
-  %a = load i128 , i128 *%aptr
-  %b = load i128 , i128 *%bptr
-  %sub = sub i128 %a, %b
-  store i128 %sub, i128 *%aptr
-  ret void
-}
-
-; Test the lowest displacement that is in range of both SLG and SLBG.
-define void @f6(i64 %base) {
-; CHECK-LABEL: f6:
-; CHECK: slg {{%r[0-5]}}, -524280(%r2)
-; CHECK: slbg {{%r[0-5]}}, -524288(%r2)
-; CHECK: br %r14
-  %addr = add i64 %base, -524288
-  %bptr = inttoptr i64 %addr to i128 *
-  %aptr = getelementptr i128, i128 *%bptr, i64 -8
-  %a = load i128 , i128 *%aptr
-  %b = load i128 , i128 *%bptr
-  %sub = sub i128 %a, %b
-  store i128 %sub, i128 *%aptr
-  ret void
-}
-
-; Test the next doubleword down, which is out of range of the SLBG.
-define void @f7(i64 %base) {
-; CHECK-LABEL: f7:
-; CHECK: slg {{%r[0-5]}}, -524288(%r2)
-; CHECK: slbg {{%r[0-5]}}, 0({{%r[1-5]}})
-; CHECK: br %r14
-  %addr = add i64 %base, -524296
-  %bptr = inttoptr i64 %addr to i128 *
-  %aptr = getelementptr i128, i128 *%bptr, i64 -8
-  %a = load i128 , i128 *%aptr
-  %b = load i128 , i128 *%bptr
-  %sub = sub i128 %a, %b
-  store i128 %sub, i128 *%aptr
-  ret void
-}
-
-; Check that subtractions of spilled values can use SLG and SLBG rather than
-; SLGR and SLBGR.
-define void @f8(i128 *%ptr0) {
-; CHECK-LABEL: f8:
-; CHECK: brasl %r14, foo@PLT
-; CHECK: slg {{%r[0-9]+}}, {{[0-9]+}}(%r15)
-; CHECK: slbg {{%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
-  %sub0 = sub i128 %ret, %val0
-  %sub1 = sub i128 %sub0, %val1
-  %sub2 = sub i128 %sub1, %val2
-  %sub3 = sub i128 %sub2, %val3
-  %sub4 = sub i128 %sub3, %val4
-  store i128 %sub4, i128 *%retptr
-
-  ret void
-}