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llvm-project/llvm/test/CodeGen/X86/fast-isel-gc-intrinsics.ll

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[FastISel][SelectionDAG]Teach fastISel about GC intrinsics Summary: We are crashing in LLC at O0 when gc intrinsics are present in the block. The reason being FastISel performs basic block ISel by modifying GC.relocates to be the first instruction in the block. This can cause us to visit the GC relocate before it's corresponding GC.statepoint is visited, which is incorrect. When we lower the statepoint, we record the base and derived pointers, along with the gc.relocates. After this we can visit the gc.relocate. This patch avoids fastISel from incorrectly creating the block with gc.relocate as the first instruction. Reviewers: qcolombet, skatkov, qikon, reames Reviewed by: skatkov Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34421 llvm-svn: 307084
2017-07-04 23:09:09 +08:00
; RUN: llc < %s -fast-isel
[FastISel] Move gc intrinsic test to X86 directory Move from generic to X86 directory since gc intrinsics only supposed in X86 64 bit. Add target triple as well. Fixes build failure in i686-linux-RA caused by rL307084. llvm-svn: 307086
2017-07-04 23:24:08 +08:00
target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"
[FastISel][SelectionDAG]Teach fastISel about GC intrinsics Summary: We are crashing in LLC at O0 when gc intrinsics are present in the block. The reason being FastISel performs basic block ISel by modifying GC.relocates to be the first instruction in the block. This can cause us to visit the GC relocate before it's corresponding GC.statepoint is visited, which is incorrect. When we lower the statepoint, we record the base and derived pointers, along with the gc.relocates. After this we can visit the gc.relocate. This patch avoids fastISel from incorrectly creating the block with gc.relocate as the first instruction. Reviewers: qcolombet, skatkov, qikon, reames Reviewed by: skatkov Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34421 llvm-svn: 307084
2017-07-04 23:09:09 +08:00
; Dont crash with gc intrinsics.
; gcrelocate call should not be an LLVM Machine Block by itself.
define i8 addrspace(1)* @test_gcrelocate(i8 addrspace(1)* %v) gc "statepoint-example" {
entry:
%tok = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0, i8 addrspace(1)* %v)
%vnew = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %tok, i32 7, i32 7)
ret i8 addrspace(1)* %vnew
}
; gcresult calls are fine in their own blocks.
define i1 @test_gcresult() gc "statepoint-example" {
entry:
%safepoint_token = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0)
%call1 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
ret i1 %call1
}
; we are okay here because we see the gcrelocate and avoid generating their own
; block.
define i1 @test_gcresult_gcrelocate(i8 addrspace(1)* %v) gc "statepoint-example" {
entry:
%safepoint_token = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i8 addrspace(1)* %v)
%call1 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
%vnew = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %safepoint_token, i32 7, i32 7)
ret i1 %call1
}
define i8 addrspace(1)* @test_non_entry_block(i8 addrspace(1)* %v, i8 %val) gc "statepoint-example" {
entry:
%load = load i8, i8 addrspace(1)* %v
%cmp = icmp eq i8 %load, %val
br i1 %cmp, label %func_call, label %exit
func_call:
call void @dummy()
%tok = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0, i8 addrspace(1)* %v)
%vnew = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %tok, i32 7, i32 7)
ret i8 addrspace(1)* %vnew
exit:
ret i8 addrspace(1)* %v
}
declare void @dummy()
declare void @foo()
declare zeroext i1 @return_i1()
declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
declare i1 @llvm.experimental.gc.result.i1(token)
declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32)