mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-29 23:12:55 +01:00
84 lines
3.3 KiB
LLVM
84 lines
3.3 KiB
LLVM
; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux | FileCheck %s
|
|
|
|
; The Peephole optimizer should fold the load into the cmp even with debug info.
|
|
; CHECK-LABEL: _ZN3Foo3batEv
|
|
; CHECK-NOT: movq pfoo
|
|
; CHECK: cmpq {{%[a-z]+}}, pfoo(%rip)
|
|
;
|
|
; CHECK-LABEL: _Z3bazv
|
|
; CHECK-NOT: movq wibble2
|
|
; CHECK: cmpq {{%[a-z]+}}, wibble2(%rip)
|
|
|
|
; Regenerate test with this command:
|
|
; clang -emit-llvm -S -O2 -g
|
|
; from this source:
|
|
; struct Foo {
|
|
; bool bat();
|
|
; bool operator==(Foo &arg) { return (this == &arg); }
|
|
; };
|
|
; Foo *pfoo;
|
|
; bool Foo::bat() { return (*this == *pfoo); }
|
|
;
|
|
; struct Wibble {
|
|
; int x;
|
|
; } *wibble1, *wibble2;
|
|
; struct Flibble {
|
|
; void bar(Wibble *c) {
|
|
; if (c < wibble2)
|
|
; wibble2 = 0;
|
|
; c->x = 0;
|
|
; }
|
|
; } flibble;
|
|
; void baz() { flibble.bar(wibble1); }
|
|
|
|
%struct.Foo = type { i8 }
|
|
%struct.Wibble = type { i32 }
|
|
%struct.Flibble = type { i8 }
|
|
|
|
@pfoo = global %struct.Foo* null, align 8
|
|
@wibble1 = global %struct.Wibble* null, align 8
|
|
@wibble2 = global %struct.Wibble* null, align 8
|
|
@flibble = global %struct.Flibble zeroinitializer, align 1
|
|
|
|
; Function Attrs: nounwind readonly uwtable
|
|
define zeroext i1 @_ZN3Foo3batEv(%struct.Foo* %this) #0 align 2 {
|
|
entry:
|
|
%0 = load %struct.Foo** @pfoo, align 8
|
|
tail call void @llvm.dbg.value(metadata !{%struct.Foo* %0}, i64 0, metadata !62)
|
|
%cmp.i = icmp eq %struct.Foo* %0, %this
|
|
ret i1 %cmp.i
|
|
}
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define void @_Z3bazv() #1 {
|
|
entry:
|
|
%0 = load %struct.Wibble** @wibble1, align 8
|
|
tail call void @llvm.dbg.value(metadata !64, i64 0, metadata !65)
|
|
%1 = load %struct.Wibble** @wibble2, align 8
|
|
%cmp.i = icmp ugt %struct.Wibble* %1, %0
|
|
br i1 %cmp.i, label %if.then.i, label %_ZN7Flibble3barEP6Wibble.exit
|
|
|
|
if.then.i: ; preds = %entry
|
|
store %struct.Wibble* null, %struct.Wibble** @wibble2, align 8
|
|
br label %_ZN7Flibble3barEP6Wibble.exit
|
|
|
|
_ZN7Flibble3barEP6Wibble.exit: ; preds = %entry, %if.then.i
|
|
%x.i = getelementptr inbounds %struct.Wibble* %0, i64 0, i32 0
|
|
store i32 0, i32* %x.i, align 4
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare void @llvm.dbg.value(metadata, i64, metadata) #2
|
|
|
|
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" }
|
|
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" }
|
|
attributes #2 = { nounwind readnone }
|
|
|
|
|
|
!17 = metadata !{i32 786448, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, null} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from Foo]
|
|
!45 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from Flibble]
|
|
!62 = metadata !{i32 786689, null, metadata !"arg", null, i32 33554436, metadata !17, i32 0, null} ; [ DW_TAG_arg_variable ] [arg] [line 4]
|
|
!64 = metadata !{%struct.Flibble* undef}
|
|
!65 = metadata !{i32 786689, null, metadata !"this", null, i32 16777229, metadata !45, i32 1088, null} ; [ DW_TAG_arg_variable ] [this] [line 13]
|