mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
551d6b4075
gc.statepoint intrinsics with a far immediate call target were lowered incorrectly as pc-rel32 calls. This change fixes the problem, and generates an indirect call via a scratch register. For example: Intrinsic: %safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* inttoptr (i64 140727162896504 to void ()*), i32 0, i32 0, i32 0, i32 0) Old Incorrect Lowering: callq 140727162896504 New Correct Lowering: movabsq $140727162896504, %rax callq *%rax In lowerCallFromStatepoint(), the callee-target was modified and represented as a "TargetConstant" node, rather than a "Constant" node. Undoing this modification enabled LowerCall() to generate the correct CALL instruction. llvm-svn: 239114
23 lines
798 B
LLVM
23 lines
798 B
LLVM
; RUN: llc < %s | FileCheck %s
|
|
; Test to check that Statepoints with X64 far-immediate targets
|
|
; are lowered correctly to an indirect call via a scratch register.
|
|
|
|
target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-pc-win64"
|
|
|
|
define void @test_far_call() gc "statepoint-example" {
|
|
; CHECK-LABEL: test_far_call
|
|
; CHECK: pushq %rax
|
|
; CHECK: movabsq $140727162896504, %rax
|
|
; CHECK: callq *%rax
|
|
; CHECK: popq %rax
|
|
; CHECK: retq
|
|
|
|
entry:
|
|
%safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* inttoptr (i64 140727162896504 to void ()*), i32 0, i32 0, i32 0, i32 0)
|
|
ret void
|
|
}
|
|
|
|
declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
|
|
|