diff options
Diffstat (limited to 'test/CodeGen/X86/win64_call_epi.ll')
-rw-r--r-- | test/CodeGen/X86/win64_call_epi.ll | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/test/CodeGen/X86/win64_call_epi.ll b/test/CodeGen/X86/win64_call_epi.ll new file mode 100644 index 0000000..bc73ad4 --- /dev/null +++ b/test/CodeGen/X86/win64_call_epi.ll @@ -0,0 +1,65 @@ +; RUN: llc < %s -mtriple=x86_64-pc-mingw32 | FileCheck %s -check-prefix=WIN64 + +declare void @bar() +declare void @baz() +declare i32 @personality(...) + +; Check for 'nop' between the last call and the epilogue. +define void @foo1() { + + invoke void @bar() + to label %normal + unwind label %catch + +normal: + ret void + +catch: + %1 = landingpad { i8*, i32 } personality i32 (...)* @personality cleanup + resume { i8*, i32 } %1 +} +; WIN64-LABEL: foo1: +; WIN64: .seh_proc foo1 +; WIN64: callq bar +; WIN64: nop +; WIN64: addq ${{[0-9]+}}, %rsp +; WIN64: retq +; Check for 'ud2' after noreturn call +; WIN64: callq _Unwind_Resume +; WIN64-NEXT: ud2 +; WIN64: .seh_endproc + + +; Check it still works when blocks are reordered. +@something = global i32 0 +define void @foo2(i1 zeroext %cond ) { + br i1 %cond, label %a, label %b, !prof !0 +a: + call void @bar() + br label %done +b: + call void @baz() + store i32 0, i32* @something + br label %done +done: + ret void +} +!0 = metadata !{metadata !"branch_weights", i32 100, i32 0} +; WIN64-LABEL: foo2: +; WIN64: callq bar +; WIN64: nop +; WIN64: addq ${{[0-9]+}}, %rsp +; WIN64: retq + + +; Check nop is not emitted when call is not adjacent to epilogue. +define i32 @foo3() { + call void @bar() + ret i32 0 +} +; WIN64-LABEL: foo3: +; WIN64: callq bar +; WIN64: xorl +; WIN64-NOT: nop +; WIN64: addq ${{[0-9]+}}, %rsp +; WIN64: retq |