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9c5542c040
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
84 lines
3.2 KiB
LLVM
84 lines
3.2 KiB
LLVM
; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux | FileCheck %s
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; The Peephole optimizer should fold the load into the cmp even with debug info.
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; CHECK-LABEL: _ZN3Foo3batEv
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; CHECK-NOT: movq pfoo
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; CHECK: cmpq {{%[a-z]+}}, pfoo(%rip)
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;
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; CHECK-LABEL: _Z3bazv
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; CHECK-NOT: movq wibble2
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; CHECK: cmpq {{%[a-z]+}}, wibble2(%rip)
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; Regenerate test with this command:
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; clang -emit-llvm -S -O2 -g
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; from this source:
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; struct Foo {
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; bool bat();
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; bool operator==(Foo &arg) { return (this == &arg); }
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; };
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; Foo *pfoo;
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; bool Foo::bat() { return (*this == *pfoo); }
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;
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; struct Wibble {
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; int x;
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; } *wibble1, *wibble2;
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; struct Flibble {
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; void bar(Wibble *c) {
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; if (c < wibble2)
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; wibble2 = 0;
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; c->x = 0;
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; }
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; } flibble;
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; void baz() { flibble.bar(wibble1); }
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%struct.Foo = type { i8 }
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%struct.Wibble = type { i32 }
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%struct.Flibble = type { i8 }
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@pfoo = global %struct.Foo* null, align 8
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@wibble1 = global %struct.Wibble* null, align 8
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@wibble2 = global %struct.Wibble* null, align 8
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@flibble = global %struct.Flibble zeroinitializer, align 1
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; Function Attrs: nounwind readonly uwtable
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define zeroext i1 @_ZN3Foo3batEv(%struct.Foo* %this) #0 align 2 {
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entry:
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%0 = load %struct.Foo** @pfoo, align 8
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tail call void @llvm.dbg.value(metadata %struct.Foo* %0, i64 0, metadata !62, metadata !{!"0x102"})
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%cmp.i = icmp eq %struct.Foo* %0, %this
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ret i1 %cmp.i
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}
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; Function Attrs: nounwind uwtable
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define void @_Z3bazv() #1 {
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entry:
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%0 = load %struct.Wibble** @wibble1, align 8
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tail call void @llvm.dbg.value(metadata %struct.Flibble* undef, i64 0, metadata !65, metadata !{!"0x102"})
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%1 = load %struct.Wibble** @wibble2, align 8
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%cmp.i = icmp ugt %struct.Wibble* %1, %0
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br i1 %cmp.i, label %if.then.i, label %_ZN7Flibble3barEP6Wibble.exit
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if.then.i: ; preds = %entry
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store %struct.Wibble* null, %struct.Wibble** @wibble2, align 8
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br label %_ZN7Flibble3barEP6Wibble.exit
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_ZN7Flibble3barEP6Wibble.exit: ; preds = %entry, %if.then.i
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%x.i = getelementptr inbounds %struct.Wibble* %0, i64 0, i32 0
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store i32 0, i32* %x.i, align 4
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ret void
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
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attributes #0 = { nounwind readonly uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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!17 = !{!"0x10\00\000\000\000\000\000", null, null, null} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from Foo]
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!45 = !{!"0xf\00\000\0064\0064\000\000", null, null, null} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from Flibble]
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!62 = !{!"0x101\00arg\0033554436\000", null, null, !17} ; [ DW_TAG_arg_variable ] [arg] [line 4]
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!64 = !{%struct.Flibble* undef}
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!65 = !{!"0x101\00this\0016777229\001088", null, null, !45} ; [ DW_TAG_arg_variable ] [this] [line 13]
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