Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/CodeGen/SystemZ/cond-load-01.ll

@@ -1,148 +0,0 @@
-; Test LOC.
-;
-; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
-
-; Run the test again to make sure it still works the same even
-; in the presence of the load-store-on-condition-2 facility.
-; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
-
-declare i32 @foo(i32 *)
-
-; Test the simple case.
-define i32 @f1(i32 %easy, i32 *%ptr, i32 %limit) {
-; CHECK-LABEL: f1:
-; CHECK: clfi %r4, 42
-; CHECK: loche %r2, 0(%r3)
-; CHECK: br %r14
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-
-; ...and again with the operands swapped.
-define i32 @f2(i32 %easy, i32 *%ptr, i32 %limit) {
-; CHECK-LABEL: f2:
-; CHECK: clfi %r4, 42
-; CHECK: locl %r2, 0(%r3)
-; CHECK: br %r14
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %other, i32 %easy
-  ret i32 %res
-}
-
-; Check the high end of the aligned LOC range.
-define i32 @f3(i32 %easy, i32 *%base, i32 %limit) {
-; CHECK-LABEL: f3:
-; CHECK: clfi %r4, 42
-; CHECK: loche %r2, 524284(%r3)
-; CHECK: br %r14
-  %ptr = getelementptr i32, i32 *%base, i64 131071
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-
-; Check the next word up.  Other sequences besides this one would be OK.
-define i32 @f4(i32 %easy, i32 *%base, i32 %limit) {
-; CHECK-LABEL: f4:
-; CHECK: agfi %r3, 524288
-; CHECK: clfi %r4, 42
-; CHECK: loche %r2, 0(%r3)
-; CHECK: br %r14
-  %ptr = getelementptr i32, i32 *%base, i64 131072
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-
-; Check the low end of the LOC range.
-define i32 @f5(i32 %easy, i32 *%base, i32 %limit) {
-; CHECK-LABEL: f5:
-; CHECK: clfi %r4, 42
-; CHECK: loche %r2, -524288(%r3)
-; CHECK: br %r14
-  %ptr = getelementptr i32, i32 *%base, i64 -131072
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-
-; Check the next word down, with the same comments as f4.
-define i32 @f6(i32 %easy, i32 *%base, i32 %limit) {
-; CHECK-LABEL: f6:
-; CHECK: agfi %r3, -524292
-; CHECK: clfi %r4, 42
-; CHECK: loche %r2, 0(%r3)
-; CHECK: br %r14
-  %ptr = getelementptr i32, i32 *%base, i64 -131073
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-
-; Try a frame index base.
-define i32 @f7(i32 %alt, i32 %limit) {
-; CHECK-LABEL: f7:
-; CHECK: brasl %r14, foo@PLT
-; CHECK: loche %r2, {{[0-9]+}}(%r15)
-; CHECK: br %r14
-  %ptr = alloca i32
-  %easy = call i32 @foo(i32 *%ptr)
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-
-; Try a case when an index is involved.
-define i32 @f8(i32 %easy, i32 %limit, i64 %base, i64 %index) {
-; CHECK-LABEL: f8:
-; CHECK: clfi %r3, 42
-; CHECK: loche %r2, 0({{%r[1-5]}})
-; CHECK: br %r14
-  %add = add i64 %base, %index
-  %ptr = inttoptr i64 %add to i32 *
-  %cond = icmp ult i32 %limit, 42
-  %other = load i32 , i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-
-; Test that conditionally-executed loads do not use LOC, since it is allowed
-; to trap even when the condition is false.
-define i32 @f9(i32 %easy, i32 %limit, i32 *%ptr) {
-; CHECK-LABEL: f9:
-; CHECK-NOT: loc
-; CHECK: br %r14
-entry:
-  %cmp = icmp ule i32 %easy, %limit
-  br i1 %cmp, label %load, label %exit
-
-load:
-  %other = load i32 , i32 *%ptr
-  br label %exit
-
-exit:
-  %res = phi i32 [ %easy, %entry ], [ %other, %load ]
-  ret i32 %res
-}
-
-; Test that volatile loads do not use LOC, since if the condition is false,
-; it is unspecified whether or not the load happens.  LOCR is fine though.
-define i32 @f10(i32 %easy, i32 *%ptr, i32 %limit) {
-; CHECK-LABEL: f10:
-; CHECK: l {{%r[0-9]*}}, 0(%r3)
-; CHECK: locr
-; CHECK: br %r14
-  %cond = icmp ult i32 %limit, 42
-  %other = load volatile i32, i32 *%ptr
-  %res = select i1 %cond, i32 %easy, i32 %other
-  ret i32 %res
-}
-