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clang: Allow backend unsupported warnings
Currently this asserts on anything other than errors. In one workaround scenario, AMDGPU emits DiagnosticInfoUnsupported as a warning for functions that can't be correctly codegened, but should never be executed.
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; RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -S -o - %s 2>&1 | FileCheck %s | ||
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; Check that a DiagnosticUnsupported reported as a warning works | ||
; correctly, and is not emitted as an error. | ||
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; CHECK: warning: test.c:2:20: in function use_lds_global_in_func i32 (): local memory global used by non-kernel function | ||
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target triple = "amdgcn-amd-amdhsa" | ||
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@lds = external addrspace(3) global i32, align 4 | ||
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define i32 @use_lds_global_in_func() !dbg !5 { | ||
%load = load i32, i32 addrspace(3)* @lds, !dbg !9 | ||
ret i32 %load, !dbg !10 | ||
} | ||
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!llvm.dbg.cu = !{!0} | ||
!llvm.module.flags = !{!3, !4} | ||
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) | ||
!1 = !DIFile(filename: "test.c", directory: "") | ||
!2 = !{} | ||
!3 = !{i32 2, !"Dwarf Version", i32 4} | ||
!4 = !{i32 2, !"Debug Info Version", i32 3} | ||
!5 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 2, type: !6, scopeLine: 2, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) | ||
!6 = !DISubroutineType(types: !7) | ||
!7 = !{!8} | ||
!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) | ||
!9 = !DILocation(line: 2, column: 20, scope: !5) | ||
!10 = !DILocation(line: 2, column: 13, scope: !5) |