Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/X86/huge-stack-offset2.ll

@@ -1,62 +0,0 @@
-; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s --check-prefix=CHECK
-
-; Test how we handle pathologically large stack frames when RAX is live through
-; the prologue and epilogue.
-
-declare void @bar(i8*)
-declare void @llvm.va_start(i8*)
-
-; For stack frames between 2GB and 16GB, do multiple adjustments.
-
-define i32 @stack_frame_8gb(i32 %x, ...) nounwind {
-; CHECK-LABEL: stack_frame_8gb:
-; CHECK:      subq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      subq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      subq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      subq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      subq ${{.*}}, %rsp
-; CHECK:      callq bar
-; CHECK:      addq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      addq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      addq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      addq ${{.*}}, %rsp # imm = 0x7FFFFFFF
-; CHECK:      addq ${{.*}}, %rsp
-; CHECK:      retq
-  %1 = alloca [u0x200000000 x i8]
-  %va = alloca i8, i32 24
-  call void @llvm.va_start(i8* %va)
-  %2 = getelementptr inbounds [u0x200000000 x i8], [u0x200000000 x i8]* %1, i32 0, i32 0
-  call void @bar(i8* %2)
-  ret i32 %x
-}
-
-; For stack frames larger than 16GB, spill EAX instead of doing a linear number
-; of adjustments.
-
-; This function should have a frame size of 0x4000000D0. The 0xD0 is 208 bytes
-; from 24 bytes of va_list, 176 bytes of spilled varargs regparms, and 8 bytes
-; of alignment. We subtract 8 less and add 8 more in the prologue and epilogue
-; respectively to account for the PUSH.
-
-define i32 @stack_frame_16gb(i32 %x, ...) nounwind {
-; CHECK-LABEL: stack_frame_16gb:
-; CHECK:      pushq %rax
-; CHECK-NEXT: movabsq ${{.*}}, %rax # imm = 0xFFFFFFFBFFFFFF38
-; CHECK-NEXT: addq %rsp, %rax
-; CHECK-NEXT: xchgq %rax, (%rsp)
-; CHECK-NEXT: movq (%rsp), %rsp
-; CHECK:      callq bar
-; CHECK:      pushq %rax
-; CHECK-NEXT: movabsq ${{.*}}, %rax # imm = 0x4000000D8
-; CHECK-NEXT: addq %rsp, %rax
-; CHECK-NEXT: xchgq %rax, (%rsp)
-; CHECK-NEXT: movq (%rsp), %rsp
-; CHECK:      retq
-  %1 = alloca [u0x400000000 x i8]
-  %va = alloca i8, i32 24
-  call void @llvm.va_start(i8* %va)
-  %2 = getelementptr inbounds [u0x400000000 x i8], [u0x400000000 x i8]* %1, i32 0, i32 0
-  call void @bar(i8* %2)
-  ret i32 %x
-}
-