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[StatepointLowering] Add test for cross-BB gc.relocate lowering

This commit is contained in:
Denis Antrushin 2022-04-22 22:03:14 +07:00
parent f7db8b7a9c
commit a6d1a76a07
1 changed files with 26 additions and 0 deletions
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26
llvm/test/CodeGen/X86/statepoint-vreg-details.ll
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@ -342,6 +342,32 @@ entry:
ret i8 addrspace(1)* %res
}
; Show that ISEL of gc.relocate used in other BB does generate extra COPY instruction.
define i1 @test_cross_bb_reloc(i32 addrspace(1)* %a, i1 %external_cond) gc "statepoint-example" {
; CHECK-VREG_LABEL: test_cross_bb_reloc:
; CHECK-VREG: bb.0.entry:
; CHECK-VREG: [[VREG:%[^ ]+]]:gr64 = STATEPOINT 0, 0, 0, @return_i1, 2, 0, 2, 0, 2, 0, 2, 1, %2(tied-def 0), 2, 0, 2, 1, 0, 0, csr_64, implicit-def $rsp, implicit-def $ssp, implicit-def $al
; CHECK-VREG: [[EXTRA:%[^ ]+]]:gr64 = COPY [[VREG]]
; CHECK-VREG: bb.1.left:
; CHECK-VREG: $rdi = COPY [[EXTRA]]
; CHECK-VREG: CALL64pcrel32 @consume, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
; CHECK-VREG: $al = COPY %1
; CHECK-VREG: RET 0, $al
entry:
%safepoint_token = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* elementtype(i1 ()) @return_i1, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %a)]
%call1 = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
%call2 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
br i1 %external_cond, label %left, label %right
left:
call void @consume(i32 addrspace(1)* %call1)
ret i1 %call2
right:
ret i1 true
}
declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
declare dso_local i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token, i32, i32)