Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/SystemZ/frame-01.ll

@@ -1,126 +0,0 @@
-; Test the allocation of frames in cases where we do not need to save
-; registers in the prologue.
-;
-; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
-
-declare void @foo(i32 *)
-
-; The CFA offset is 160 (the caller-allocated part of the frame) + 168.
-define void @f1(i64 %x) {
-; CHECK-LABEL: f1:
-; CHECK: aghi %r15, -168
-; CHECK: .cfi_def_cfa_offset 328
-; CHECK: stg %r2, 160(%r15)
-; CHECK: aghi %r15, 168
-; CHECK: br %r14
-  %y = alloca i64, align 8
-  store volatile i64 %x, i64* %y
-  ret void
-}
-
-; Check frames of size 32760, which is the largest size that can be both
-; allocated and freed using AGHI.  This size is big enough to require
-; two emergency spill slots at 160(%r15), for instructions with unsigned
-; 12-bit offsets that end up being out of range.  Fill the remaining
-; 32760 - 176 bytes by allocating (32760 - 176) / 8 = 4073 doublewords.
-define void @f2(i64 %x) {
-; CHECK-LABEL: f2:
-; CHECK: aghi %r15, -32760
-; CHECK: .cfi_def_cfa_offset 32920
-; CHECK: stg %r2, 176(%r15)
-; CHECK: aghi %r15, 32760
-; CHECK: br %r14
-  %y = alloca [4073 x i64], align 8
-  %ptr = getelementptr inbounds [4073 x i64], [4073 x i64]* %y, i64 0, i64 0
-  store volatile i64 %x, i64* %ptr
-  ret void
-}
-
-; Allocate one more doubleword.  This is the one frame size that we can
-; allocate using AGHI but must free using AGFI.
-define void @f3(i64 %x) {
-; CHECK-LABEL: f3:
-; CHECK: aghi %r15, -32768
-; CHECK: .cfi_def_cfa_offset 32928
-; CHECK: stg %r2, 176(%r15)
-; CHECK: agfi %r15, 32768
-; CHECK: br %r14
-  %y = alloca [4074 x i64], align 8
-  %ptr = getelementptr inbounds [4074 x i64], [4074 x i64]* %y, i64 0, i64 0
-  store volatile i64 %x, i64* %ptr
-  ret void
-}
-
-; Allocate another doubleword on top of that.  The allocation and free
-; must both use AGFI.
-define void @f4(i64 %x) {
-; CHECK-LABEL: f4:
-; CHECK: agfi %r15, -32776
-; CHECK: .cfi_def_cfa_offset 32936
-; CHECK: stg %r2, 176(%r15)
-; CHECK: agfi %r15, 32776
-; CHECK: br %r14
-  %y = alloca [4075 x i64], align 8
-  %ptr = getelementptr inbounds [4075 x i64], [4075 x i64]* %y, i64 0, i64 0
-  store volatile i64 %x, i64* %ptr
-  ret void
-}
-
-; The largest size that can be both allocated and freed using AGFI.
-; At this point the frame is too big to represent properly in the CFI.
-define void @f5(i64 %x) {
-; CHECK-LABEL: f5:
-; CHECK: agfi %r15, -2147483640
-; CHECK: stg %r2, 176(%r15)
-; CHECK: agfi %r15, 2147483640
-; CHECK: br %r14
-  %y = alloca [268435433 x i64], align 8
-  %ptr = getelementptr inbounds [268435433 x i64], [268435433 x i64]* %y, i64 0, i64 0
-  store volatile i64 %x, i64* %ptr
-  ret void
-}
-
-; The only frame size that can be allocated using a single AGFI but which
-; must be freed using two instructions.
-define void @f6(i64 %x) {
-; CHECK-LABEL: f6:
-; CHECK: agfi %r15, -2147483648
-; CHECK: stg %r2, 176(%r15)
-; CHECK: agfi %r15, 2147483640
-; CHECK: aghi %r15, 8
-; CHECK: br %r14
-  %y = alloca [268435434 x i64], align 8
-  %ptr = getelementptr inbounds [268435434 x i64], [268435434 x i64]* %y, i64 0, i64 0
-  store volatile i64 %x, i64* %ptr
-  ret void
-}
-
-; The smallest frame size that needs two instructions to both allocate
-; and free the frame.
-define void @f7(i64 %x) {
-; CHECK-LABEL: f7:
-; CHECK: agfi %r15, -2147483648
-; CHECK: aghi %r15, -8
-; CHECK: stg %r2, 176(%r15)
-; CHECK: agfi %r15, 2147483640
-; CHECK: aghi %r15, 16
-; CHECK: br %r14
-  %y = alloca [268435435 x i64], align 8
-  %ptr = getelementptr inbounds [268435435 x i64], [268435435 x i64]* %y, i64 0, i64 0
-  store volatile i64 %x, i64* %ptr
-  ret void
-}
-
-; Make sure that LA can be rematerialized.
-define void @f8() {
-; CHECK-LABEL: f8:
-; CHECK: la %r2, 164(%r15)
-; CHECK: brasl %r14, foo@PLT
-; CHECK: la %r2, 164(%r15)
-; CHECK: brasl %r14, foo@PLT
-; CHECK: br %r14
-  %ptr = alloca i32
-  call void @foo(i32 *%ptr)
-  call void @foo(i32 *%ptr)
-  ret void
-}