[llvm] a6d1a76 - [StatepointLowering] Add test for cross-BB gc.relocate lowering
Denis Antrushin via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 22 08:23:15 PDT 2022
Author: Denis Antrushin
Date: 2022-04-22T22:20:35+07:00
New Revision: a6d1a76a07eb7bd2aefedfede55c6c724a49a5e0
URL: https://github.com/llvm/llvm-project/commit/a6d1a76a07eb7bd2aefedfede55c6c724a49a5e0
DIFF: https://github.com/llvm/llvm-project/commit/a6d1a76a07eb7bd2aefedfede55c6c724a49a5e0.diff
LOG: [StatepointLowering] Add test for cross-BB gc.relocate lowering
Added:
Modified:
llvm/test/CodeGen/X86/statepoint-vreg-details.ll
Removed:
################################################################################
diff --git a/llvm/test/CodeGen/X86/statepoint-vreg-details.ll b/llvm/test/CodeGen/X86/statepoint-vreg-details.ll
index 426d4404a6ce8..2aae921d2ab56 100644
--- a/llvm/test/CodeGen/X86/statepoint-vreg-details.ll
+++ b/llvm/test/CodeGen/X86/statepoint-vreg-details.ll
@@ -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)
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