2014-03-04 04:06:11 +08:00
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; RUN: opt < %s -add-discriminators -S | FileCheck %s
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; Test that the only instructions that receive a new discriminator in
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; the block 'if.then' are those that share the same line number as
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; the branch in 'entry'.
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;
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; Original code:
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;
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; void foo(int i) {
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; int x, y;
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; if (i < 10) { x = i;
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; y = -i;
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; }
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; }
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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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%y = 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.end, !dbg !10
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if.then: ; preds = %entry
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%1 = load i32* %i.addr, align 4, !dbg !12
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store i32 %1, i32* %x, align 4, !dbg !12
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%2 = load i32* %i.addr, align 4, !dbg !14
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; CHECK: %2 = load i32* %i.addr, align 4, !dbg !15
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%sub = sub nsw i32 0, %2, !dbg !14
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; CHECK: %sub = sub nsw i32 0, %2, !dbg !15
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store i32 %sub, i32* %y, align 4, !dbg !14
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; CHECK: store i32 %sub, i32* %y, align 4, !dbg !15
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br label %if.end, !dbg !15
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; CHECK: br label %if.end, !dbg !16
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if.end: ; preds = %if.then, %entry
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ret void, !dbg !16
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; CHECK: ret void, !dbg !17
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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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IR: Make metadata typeless in assembly
Now that `Metadata` is typeless, reflect that in the assembly. These
are the matching assembly changes for the metadata/value split in
r223802.
- Only use the `metadata` type when referencing metadata from a call
intrinsic -- i.e., only when it's used as a `Value`.
- Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
when referencing it from call intrinsics.
So, assembly like this:
define @foo(i32 %v) {
call void @llvm.foo(metadata !{i32 %v}, metadata !0)
call void @llvm.foo(metadata !{i32 7}, metadata !0)
call void @llvm.foo(metadata !1, metadata !0)
call void @llvm.foo(metadata !3, metadata !0)
call void @llvm.foo(metadata !{metadata !3}, metadata !0)
ret void, !bar !2
}
!0 = metadata !{metadata !2}
!1 = metadata !{i32* @global}
!2 = metadata !{metadata !3}
!3 = metadata !{}
turns into this:
define @foo(i32 %v) {
call void @llvm.foo(metadata i32 %v, metadata !0)
call void @llvm.foo(metadata i32 7, metadata !0)
call void @llvm.foo(metadata i32* @global, metadata !0)
call void @llvm.foo(metadata !3, metadata !0)
call void @llvm.foo(metadata !{!3}, metadata !0)
ret void, !bar !2
}
!0 = !{!2}
!1 = !{i32* @global}
!2 = !{!3}
!3 = !{}
I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines). I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.
This is part of PR21532.
llvm-svn: 224257
2014-12-16 03:07:53 +08:00
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!0 = !{!"0x11\0012\00clang version 3.5 (trunk 199750) (llvm/trunk 199751)\000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [first-only.c] [DW_LANG_C99]
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!1 = !{!"first-only.c", !"."}
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!2 = !{i32 0}
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!3 = !{!4}
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!4 = !{!"0x2e\00foo\00foo\00\001\000\001\000\006\00256\000\001", !1, !5, !6, null, void (i32)* @foo, null, null, !2} ; [ DW_TAG_subprogram ] [line 1] [def] [foo]
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!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [first-only.c]
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!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !2, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 1, !"Debug Info Version", i32 2}
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!9 = !{!"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}
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!10 = !{i32 3, i32 0, !11, null}
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!11 = !{!"0xb\003\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [first-only.c]
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; CHECK: !11 = !{!"0xb\003\000\000", !1, !4}
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!12 = !{i32 3, i32 0, !13, null}
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!13 = !{!"0xb\003\000\001", !1, !11} ; [ DW_TAG_lexical_block ] [first-only.c]
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; CHECK: !13 = !{!"0xb\001", !1, !14} ; [ DW_TAG_lexical_block ] [./first-only.c]
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!14 = !{i32 4, i32 0, !13, null}
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; CHECK: !14 = !{!"0xb\003\000\001", !1, !11}
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!15 = !{i32 5, i32 0, !13, null}
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; CHECK: !15 = !{i32 4, i32 0, !14, null}
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!16 = !{i32 6, i32 0, !4, null}
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; CHECK: !16 = !{i32 5, i32 0, !14, null}
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; CHECK: !17 = !{i32 6, i32 0, !4, null}
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2014-03-04 04:06:11 +08:00
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