210 lines
8.8 KiB
LLVM
210 lines
8.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs -stack-symbol-ordering=0 -mcpu=nehalem -debug-only=stackmaps < %s | FileCheck %s
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; REQUIRES: asserts
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target triple = "x86_64-pc-linux-gnu"
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; Can we lower a single vector?
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define <2 x i8 addrspace(1)*> @test(<2 x i8 addrspace(1)*> %obj) gc "statepoint-example" {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: subq $24, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: movaps %xmm0, (%rsp)
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; CHECK-NEXT: callq do_safepoint
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; CHECK-NEXT: .Ltmp0:
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; CHECK-NEXT: movaps (%rsp), %xmm0
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; CHECK-NEXT: addq $24, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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%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) ["gc-live" (<2 x i8 addrspace(1)*> %obj)]
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%obj.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 0, i32 0) ; (%obj, %obj)
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ret <2 x i8 addrspace(1)*> %obj.relocated
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}
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; Can we lower the base, derived pairs if both are vectors?
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define <2 x i8 addrspace(1)*> @test2(<2 x i8 addrspace(1)*> %obj, i64 %offset) gc "statepoint-example" {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: subq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 48
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; CHECK-NEXT: movq %rdi, %xmm1
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; CHECK-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,1,0,1]
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; CHECK-NEXT: paddq %xmm0, %xmm1
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; CHECK-NEXT: movdqa %xmm0, {{[0-9]*}}(%rsp)
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; CHECK-NEXT: movdqa %xmm1, {{[0-9]*}}(%rsp)
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; CHECK-NEXT: callq do_safepoint
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; CHECK-NEXT: .Ltmp1:
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; CHECK-NEXT: movaps {{[0-9]*}}(%rsp), %xmm0
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; CHECK-NEXT: addq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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%derived = getelementptr i8, <2 x i8 addrspace(1)*> %obj, i64 %offset
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%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) ["gc-live" (<2 x i8 addrspace(1)*> %obj, <2 x i8 addrspace(1)*> %derived)]
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%derived.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 0, i32 1) ; (%obj, %derived)
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ret <2 x i8 addrspace(1)*> %derived.relocated
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}
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; Originally, this was just a variant of @test2 above, but it ends up
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; covering a bunch of interesting missed optimizations. Specifically:
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; - We waste a stack slot for a value that a backend transform pass
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; CSEd to another spilled one.
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; - We don't remove the testb even though it serves no purpose
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; - We could in principal reuse the argument memory (%rsi) and do away
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; with stack slots entirely.
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define <2 x i64 addrspace(1)*> @test3(i1 %cnd, <2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" {
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; CHECK-LABEL: test3:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: subq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 48
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; CHECK-NEXT: testb $1, %dil
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; CHECK-NEXT: movaps (%rsi), %xmm0
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; CHECK-NEXT: movaps %xmm0, (%rsp)
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; CHECK-NEXT: movaps %xmm0, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: callq do_safepoint
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; CHECK-NEXT: .Ltmp2:
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; CHECK-NEXT: movaps (%rsp), %xmm0
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; CHECK-NEXT: addq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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br i1 %cnd, label %taken, label %untaken
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taken: ; preds = %entry
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%obja = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
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br label %merge
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untaken: ; preds = %entry
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%objb = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr
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br label %merge
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merge: ; preds = %untaken, %taken
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%obj.base = phi <2 x i64 addrspace(1)*> [ %obja, %taken ], [ %objb, %untaken ]
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%obj = phi <2 x i64 addrspace(1)*> [ %obja, %taken ], [ %objb, %untaken ]
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%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) ["gc-live" (<2 x i64 addrspace(1)*> %obj, <2 x i64 addrspace(1)*> %obj.base)]
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%obj.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 1, i32 0) ; (%obj.base, %obj)
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%obj.relocated.casted = bitcast <2 x i8 addrspace(1)*> %obj.relocated to <2 x i64 addrspace(1)*>
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%obj.base.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 1, i32 1) ; (%obj.base, %obj.base)
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%obj.base.relocated.casted = bitcast <2 x i8 addrspace(1)*> %obj.base.relocated to <2 x i64 addrspace(1)*>
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ret <2 x i64 addrspace(1)*> %obj.relocated.casted
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}
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; Can we handle vector constants? At the moment, we don't appear to actually
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; get selection dag nodes for these.
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define <2 x i8 addrspace(1)*> @test4() gc "statepoint-example" {
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; CHECK-LABEL: test4:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: subq $24, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: xorps %xmm0, %xmm0
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; CHECK-NEXT: movaps %xmm0, (%rsp)
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; CHECK-NEXT: callq do_safepoint
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; CHECK-NEXT: .Ltmp3:
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; CHECK-NEXT: movaps (%rsp), %xmm0
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; CHECK-NEXT: addq $24, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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%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) ["gc-live" (<2 x i8 addrspace(1)*> zeroinitializer)]
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%obj.relocated = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token %safepoint_token, i32 0, i32 0)
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ret <2 x i8 addrspace(1)*> %obj.relocated
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}
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; Check that we can lower a constant typed as i128 correctly. We don't have
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; a representation of larger than 64 bit constant in the StackMap format. At
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; the moment, this simply means spilling them, but there's a potential
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; optimization for values representable as sext(Con64).
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define void @test5() gc "statepoint-example" {
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; CHECK-LABEL: test5:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: subq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 48
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; CHECK-NEXT: xorps %xmm0, %xmm0
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; CHECK-NEXT: movups %xmm0, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: movq $-1, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: movq $-1, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: callq do_safepoint
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; CHECK-NEXT: .Ltmp4:
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; CHECK-NEXT: addq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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%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) ["deopt" (i128 0, i128 -1)]
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ret void
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}
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; CHECK: __LLVM_StackMaps:
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; CHECK: .Ltmp0-test
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; Check for the two spill slots
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; Stack Maps: Loc 3: Indirect 7+0 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 0]
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; Stack Maps: Loc 4: Indirect 7+0 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 0]
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 0
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 0
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; CHECK: .Ltmp1-test2
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; Check for the two spill slots
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; Stack Maps: Loc 3: Indirect 7+16 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 16]
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; Stack Maps: Loc 4: Indirect 7+0 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 0]
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 0
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 16
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; CHECK: .Ltmp2-test3
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; Check for the four spill slots
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; Stack Maps: Loc 3: Indirect 7+16 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 16]
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; Stack Maps: Loc 4: Indirect 7+16 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 16]
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; Stack Maps: Loc 5: Indirect 7+16 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 16]
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; Stack Maps: Loc 6: Indirect 7+0 [encoding: .byte 3, .byte 0, .short 16, .short 7, .short 0, .int 0]
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 16
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 16
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 16
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; CHECK: .byte 3
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; CHECK: .byte 0
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; CHECK: .short 16
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 0
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declare void @do_safepoint()
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declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
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declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32)
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declare <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token, i32, i32)
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