From d9b71a28366a2c2cec455a95f9667bda922805bf Mon Sep 17 00:00:00 2001 From: Philip Reames Date: Fri, 2 Aug 2019 20:01:43 +0000 Subject: [PATCH] [Test] Demonstrate a realignment bug missed in r366765 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@367714 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../X86/statepoint-no-realign-stack.ll | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/test/CodeGen/X86/statepoint-no-realign-stack.ll b/test/CodeGen/X86/statepoint-no-realign-stack.ll index 3c2411b622b..0a1c244fde3 100644 --- a/test/CodeGen/X86/statepoint-no-realign-stack.ll +++ b/test/CodeGen/X86/statepoint-no-realign-stack.ll @@ -52,3 +52,56 @@ define void @no_realign(<8 x i32>* %p) "no-realign-stack" { call void @foo() ["deopt" (<8 x i32> %val)] ret void } + +;; Next batch are similiar to the above, but require a reload of the +;; spilled value as well. + +define <4 x i8 addrspace(1)*> @spillfill_can_realign(<4 x i8 addrspace(1)*> %obj) gc "statepoint-example" { +; CHECK-LABEL: spillfill_can_realign: +; CHECK: # %bb.0: # %entry +; CHECK-NEXT: pushq %rbp +; CHECK-NEXT: .cfi_def_cfa_offset 16 +; CHECK-NEXT: .cfi_offset %rbp, -16 +; CHECK-NEXT: movq %rsp, %rbp +; CHECK-NEXT: .cfi_def_cfa_register %rbp +; CHECK-NEXT: andq $-32, %rsp +; CHECK-NEXT: subq $64, %rsp +; CHECK-NEXT: vmovaps %ymm0, (%rsp) +; CHECK-NEXT: vzeroupper +; CHECK-NEXT: callq do_safepoint +; CHECK-NEXT: .Ltmp2: +; CHECK-NEXT: vmovaps (%rsp), %ymm0 +; CHECK-NEXT: movq %rbp, %rsp +; CHECK-NEXT: popq %rbp +; CHECK-NEXT: .cfi_def_cfa %rsp, 8 +; CHECK-NEXT: retq +entry: + %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0, <4 x i8 addrspace(1)*> %obj) + %obj.relocated = call coldcc <4 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v4p1i8(token %safepoint_token, i32 7, i32 7) ; (%obj, %obj) + ret <4 x i8 addrspace(1)*> %obj.relocated +} + +define <4 x i8 addrspace(1)*> @spillfill_no_realign(<4 x i8 addrspace(1)*> %obj) "no-realign-stack" gc "statepoint-example" { +; CHECK-LABEL: spillfill_no_realign: +; CHECK: # %bb.0: # %entry +; CHECK-NEXT: subq $40, %rsp +; CHECK-NEXT: .cfi_def_cfa_offset 48 +; CHECK-NEXT: vmovups %ymm0, (%rsp) +; CHECK-NEXT: vzeroupper +; CHECK-NEXT: callq do_safepoint +; CHECK-NEXT: .Ltmp3: +; CHECK-NEXT: vmovaps (%rsp), %ymm0 +; CHECK-NEXT: addq $40, %rsp +; CHECK-NEXT: .cfi_def_cfa_offset 8 +; CHECK-NEXT: retq +entry: + %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 0, <4 x i8 addrspace(1)*> %obj) + %obj.relocated = call coldcc <4 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v4p1i8(token %safepoint_token, i32 7, i32 7) ; (%obj, %obj) + ret <4 x i8 addrspace(1)*> %obj.relocated +} + +declare void @do_safepoint() + +declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...) +declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32) +declare <4 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v4p1i8(token, i32, i32) -- 2.40.0