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https://github.com/c64scene-ar/llvm-6502.git
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72 lines
3.4 KiB
LLVM
72 lines
3.4 KiB
LLVM
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; RUN: opt < %s -add-discriminators -S | FileCheck %s
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; Discriminator support for multiple CFG paths on the same line.
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;
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; void foo(int i) {
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; int x;
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; if (i < 10) x = i; else x = -i;
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; }
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;
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; The two stores inside the if-then-else line must have different discriminator
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; values.
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define void @foo(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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%x = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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%0 = load i32* %i.addr, align 4, !dbg !10
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%cmp = icmp slt i32 %0, 10, !dbg !10
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br i1 %cmp, label %if.then, label %if.else, !dbg !10
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if.then: ; preds = %entry
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%1 = load i32* %i.addr, align 4, !dbg !10
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; CHECK: %1 = load i32* %i.addr, align 4, !dbg !12
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store i32 %1, i32* %x, align 4, !dbg !10
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; CHECK: store i32 %1, i32* %x, align 4, !dbg !12
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br label %if.end, !dbg !10
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; CHECK: br label %if.end, !dbg !12
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if.else: ; preds = %entry
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%2 = load i32* %i.addr, align 4, !dbg !10
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; CHECK: %2 = load i32* %i.addr, align 4, !dbg !14
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%sub = sub nsw i32 0, %2, !dbg !10
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; CHECK: %sub = sub nsw i32 0, %2, !dbg !14
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store i32 %sub, i32* %x, align 4, !dbg !10
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; CHECK: store i32 %sub, i32* %x, align 4, !dbg !14
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void, !dbg !12
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}
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5 (trunk 199750) (llvm/trunk 199751)", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [multiple.c] [DW_LANG_C99]
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!1 = metadata !{metadata !"multiple.c", metadata !"."}
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!2 = metadata !{i32 0}
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!3 = metadata !{metadata !4}
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!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"foo", metadata !"foo", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i32)* @foo, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [foo]
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!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [multiple.c]
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!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
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!8 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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!9 = metadata !{metadata !"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}
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!10 = metadata !{i32 3, i32 0, metadata !11, null}
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!11 = metadata !{i32 786443, metadata !1, metadata !4, i32 3, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [multiple.c]
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!12 = metadata !{i32 4, i32 0, metadata !4, null}
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; CHECK: !12 = metadata !{i32 3, i32 0, metadata !13, null}
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; CHECK: !13 = metadata !{i32 786443, metadata !1, metadata !11, i32 3, i32 0, i32 1, i32 0} ; [ DW_TAG_lexical_block ] [./multiple.c]
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; CHECK: !14 = metadata !{i32 3, i32 0, metadata !15, null}
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; CHECK: !15 = metadata !{i32 786443, metadata !1, metadata !11, i32 3, i32 0, i32 2, i32 1} ; [ DW_TAG_lexical_block ] [./multiple.c]
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