diff options
Diffstat (limited to 'test/CodeGen/X86/statepoint-vector.ll')
| -rw-r--r-- | test/CodeGen/X86/statepoint-vector.ll | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/test/CodeGen/X86/statepoint-vector.ll b/test/CodeGen/X86/statepoint-vector.ll new file mode 100644 index 000000000000..9d80e9217b49 --- /dev/null +++ b/test/CodeGen/X86/statepoint-vector.ll @@ -0,0 +1,162 @@ +; RUN: llc -mcpu=core-avx -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) |