48 lines
1.9 KiB
LLVM
48 lines
1.9 KiB
LLVM
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; RUN: llc < %s -march=nvptx64 -mcpu=sm_50 -verify-machineinstrs | FileCheck %s
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; RUN: %if ptxas %{ llc < %s -march=nvptx64 -mcpu=sm_50 -verify-machineinstrs | %ptxas-verify %}
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; calls with a bitcasted function symbol should be fine, but in combination with
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; a byval attribute were causing a segfault during isel. This testcase was
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; reduced from a SYCL kernel using aggregate types which ended up being passed
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; `byval`
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target datalayout = "e-i64:64-i128:128-v16:16-v32:32-n16:32:64"
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target triple = "nvptx64-nvidia-cuda"
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%"class.complex" = type { %"class.sycl::_V1::detail::half_impl::half", %"class.sycl::_V1::detail::half_impl::half" }
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%"class.sycl::_V1::detail::half_impl::half" = type { half }
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%complex_half = type { half, half }
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; CHECK: .param .align 2 .b8 param2[4];
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; CHECK: st.param.b16 [param2+0], %rs1;
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; CHECK: st.param.b16 [param2+2], %rs2;
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; CHECK: .param .align 2 .b8 retval0[4];
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; CHECK: call.uni (retval0),
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; CHECK-NEXT: _Z20__spirv_GroupCMulKHRjjN5__spv12complex_halfE,
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define weak_odr void @foo() {
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entry:
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%call.i.i.i = tail call %"class.complex" @_Z20__spirv_GroupCMulKHRjjN5__spv12complex_halfE(i32 0, i32 0, ptr byval(%"class.complex") null)
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ret void
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}
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;; Function pointers can escape, so we have to use a conservative
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;; alignment for a function that has address taken.
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;;
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declare ptr @usefp(ptr %fp)
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; CHECK: .func callee(
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; CHECK-NEXT: .param .align 2 .b8 callee_param_0[4]
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define internal void @callee(ptr byval(%"class.complex") %byval_arg) {
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ret void
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}
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define void @boom() {
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%fp = call ptr @usefp(ptr @callee)
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; CHECK: .param .align 2 .b8 param0[4];
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; CHECK: st.param.b16 [param0+0], %rs1;
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; CHECK: st.param.b16 [param0+2], %rs2;
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; CHECK: .callprototype ()_ (.param .align 2 .b8 _[4]);
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call void %fp(ptr byval(%"class.complex") null)
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ret void
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}
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declare %complex_half @_Z20__spirv_GroupCMulKHRjjN5__spv12complex_halfE(i32, i32, ptr byval(%"class.complex"))
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