| ; 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: .Ltmp0-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: .Ltmp1-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: .Ltmp2-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) |
