; RUN: llc -stack-symbol-ordering=0 -mcpu=nehalem -debug-only=stackmaps < %s | FileCheck %s
; REQUIRES: asserts
target triple = "x86_64-pc-linux-gnu"
; Can we lower a single vector?
define <2 x i8 addrspace(1)*> @test(<2 x i8 addrspace(1)*> %obj) gc "statepoint-example" {
entry:
; CHECK-LABEL: @test
; CHECK: subq $24, %rsp
; CHECK: movaps %xmm0, (%rsp)
; CHECK: callq do_safepoint
; CHECK: movaps (%rsp), %xmm0
; CHECK: addq $24, %rsp
%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, <2 x i8 addrspace(1)*> %obj)
%obj.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 7, i32 7) ; (%obj, %obj)
ret <2 x i8 addrspace(1)*> %obj.relocated
}
; Can we lower the base, derived pairs if both are vectors?
define <2 x i8 addrspace(1)*> @test2(<2 x i8 addrspace(1)*> %obj, i64 %offset) gc "statepoint-example" {
entry:
; CHECK-LABEL: @test2
; CHECK: subq $40, %rsp
; CHECK: movd %rdi, %xmm1
; CHECK: pshufd $68, %xmm1, %xmm1 # xmm1 = xmm1[0,1,0,1]
; CHECK: paddq %xmm0, %xmm1
; CHECK: movdqa %xmm0, 16(%rsp)
; CHECK: movdqa %xmm1, (%rsp)
; CHECK: callq do_safepoint
; CHECK: movaps (%rsp), %xmm0
; CHECK: addq $40, %rsp
%derived = getelementptr i8, <2 x i8 addrspace(1)*> %obj, i64 %offset
%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, <2 x i8 addrspace(1)*> %obj, <2 x i8 addrspace(1)*> %derived)
%derived.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 7, i32 8) ; (%obj, %derived)
ret <2 x i8 addrspace(1)*> %derived.relocated
}
; Originally, this was just a variant of @test2 above, but it ends up
; covering a bunch of interesting missed optimizations. Specifically:
; - We waste a stack slot for a value that a backend transform pass
; CSEd to another spilled one.
; - We don't remove the testb even though it serves no purpose
; - We could in principal reuse the argument memory (%rsi) and do away
; with stack slots entirely.
define <2 x i64 addrspace(1)*> @test3(i1 %cnd, <2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" {
entry:
; CHECK-LABEL: @test3
; CHECK: subq $40, %rsp
; CHECK: testb $1, %dil
; CHECK: movaps (%rsi), %xmm0
; CHECK: movaps %xmm0, 16(%rsp)
; CHECK: movaps %xmm0, (%rsp)
; CHECK: callq do_safepoint
; CHECK: movaps (%rsp), %xmm0
; CHECK: addq $40, %rsp
br i1 %cnd, label %taken, label %untaken
taken: ; preds = %entry
%obja = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
br label %merge
untaken: ; preds = %entry
%objb = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
br label %merge
merge: ; preds = %untaken, %taken
%obj.base = phi <2 x i64 addrspace(1)*> [ %obja, %taken ], [ %objb, %untaken ]
%obj = phi <2 x i64 addrspace(1)*> [ %obja, %taken ], [ %objb, %untaken ]
%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, <2 x i64 addrspace(1)*> %obj, <2 x i64 addrspace(1)*> %obj.base)
%obj.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 8, i32 7) ; (%obj.base, %obj)
%obj.relocated.casted = bitcast <2 x i8 addrspace(1)*> %obj.relocated to <2 x i64 addrspace(1)*>
%obj.base.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 8, i32 8) ; (%obj.base, %obj.base)
%obj.base.relocated.casted = bitcast <2 x i8 addrspace(1)*> %obj.base.relocated to <2 x i64 addrspace(1)*>
ret <2 x i64 addrspace(1)*> %obj.relocated.casted
}
; Can we handle vector constants? At the moment, we don't appear to actually
; get selection dag nodes for these.
define <2 x i8 addrspace(1)*> @test4() gc "statepoint-example" {
entry:
; CHECK-LABEL: @test4
; CHECK: subq $24, %rsp
; CHECK: xorps %xmm0, %xmm0
; CHECK: movaps %xmm0, (%rsp)
; CHECK: callq do_safepoint
; CHECK: movaps (%rsp), %xmm0
; CHECK: addq $24, %rsp
%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, <2 x i8 addrspace(1)*> zeroinitializer)
%obj.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 7, i32 7) ; (%obj, %obj)
ret <2 x i8 addrspace(1)*> %obj.relocated
}
; Check that we can lower a constant typed as i128 correctly. Note that the
; actual value is representable in 64 bits. We don't have a representation
; of larger than 64 bit constant in the StackMap format.
define void @test5() gc "statepoint-example" {
entry:
; CHECK-LABEL: @test5
; CHECK: push
; CHECK: callq do_safepoint
; CHECK: pop
%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 1, i128 0)
ret void
}
; CHECK: __LLVM_StackMaps:
; CHECK: .Ltmp1-test
; Check for the two spill slots
; Stack Maps: Loc 3: Indirect 7+0 [encoding: .byte 3, .byte 16, .short 7, .int 0]
; Stack Maps: Loc 4: Indirect 7+0 [encoding: .byte 3, .byte 16, .short 7, .int 0]
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 0
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 0
; CHECK: .Ltmp3-test2
; Check for the two spill slots
; Stack Maps: Loc 3: Indirect 7+16 [encoding: .byte 3, .byte 16, .short 7, .int 16]
; Stack Maps: Loc 4: Indirect 7+0 [encoding: .byte 3, .byte 16, .short 7, .int 0]
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 16
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 0
; CHECK: .Ltmp5-test3
; Check for the four spill slots
; Stack Maps: Loc 3: Indirect 7+16 [encoding: .byte 3, .byte 16, .short 7, .int 16]
; Stack Maps: Loc 4: Indirect 7+16 [encoding: .byte 3, .byte 16, .short 7, .int 16]
; Stack Maps: Loc 5: Indirect 7+16 [encoding: .byte 3, .byte 16, .short 7, .int 16]
; Stack Maps: Loc 6: Indirect 7+0 [encoding: .byte 3, .byte 16, .short 7, .int 0]
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 16
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 16
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 16
; CHECK: .byte 3
; CHECK: .byte 16
; CHECK: .short 7
; CHECK: .long 0
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 <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token, i32, i32)