mirror of
https://github.com/c64scene-ar/llvm-6502.git
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9989a63818
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150537 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
2.1 KiB
LLVM
68 lines
2.1 KiB
LLVM
; RUN: llc < %s -march=x86-64 | FileCheck %s
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%struct.obj = type { i64 }
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; CHECK: _Z7releaseP3obj
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define void @_Z7releaseP3obj(%struct.obj* nocapture %o) nounwind uwtable ssp {
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entry:
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; CHECK: decq (%{{rdi|rcx}})
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; CHECK-NEXT: je
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%refcnt = getelementptr inbounds %struct.obj* %o, i64 0, i32 0
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%0 = load i64* %refcnt, align 8, !tbaa !0
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%dec = add i64 %0, -1
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store i64 %dec, i64* %refcnt, align 8, !tbaa !0
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%tobool = icmp eq i64 %dec, 0
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br i1 %tobool, label %if.end, label %return
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if.end: ; preds = %entry
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%1 = bitcast %struct.obj* %o to i8*
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tail call void @free(i8* %1)
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br label %return
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return: ; preds = %entry, %if.end
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ret void
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}
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@c = common global i64 0, align 8
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@a = common global i32 0, align 4
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@.str = private unnamed_addr constant [5 x i8] c"%ld\0A\00", align 1
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@b = common global i32 0, align 4
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; CHECK: test
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define i32 @test() nounwind uwtable ssp {
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entry:
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; CHECK: decq
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; CHECK-NOT: decq
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%0 = load i64* @c, align 8, !tbaa !0
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%dec.i = add nsw i64 %0, -1
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store i64 %dec.i, i64* @c, align 8, !tbaa !0
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%tobool.i = icmp ne i64 %dec.i, 0
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%lor.ext.i = zext i1 %tobool.i to i32
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store i32 %lor.ext.i, i32* @a, align 4, !tbaa !3
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%call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([5 x i8]* @.str, i64 0, i64 0), i64 %dec.i) nounwind
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ret i32 0
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}
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; CHECK: test2
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define i32 @test2() nounwind uwtable ssp {
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entry:
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; CHECK-NOT: decq ({{.*}})
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%0 = load i64* @c, align 8, !tbaa !0
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%dec.i = add nsw i64 %0, -1
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store i64 %dec.i, i64* @c, align 8, !tbaa !0
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%tobool.i = icmp ne i64 %0, 0
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%lor.ext.i = zext i1 %tobool.i to i32
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store i32 %lor.ext.i, i32* @a, align 4, !tbaa !3
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%call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([5 x i8]* @.str, i64 0, i64 0), i64 %dec.i) nounwind
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ret i32 0
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}
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declare i32 @printf(i8* nocapture, ...) nounwind
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declare void @free(i8* nocapture) nounwind
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!0 = metadata !{metadata !"long", metadata !1}
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!1 = metadata !{metadata !"omnipotent char", metadata !2}
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!2 = metadata !{metadata !"Simple C/C++ TBAA", null}
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!3 = metadata !{metadata !"int", metadata !1}
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