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comparison test/CodeGen/X86/2009-10-19-atomic-cmp-eflags.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children afa8332a0e37
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-1:000000000000 0:95c75e76d11b
1 ; RUN: llvm-as <%s | llc | FileCheck %s
2 ; PR 5247
3 ; check that cmp is not scheduled before the add
4 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
5 target triple = "x86_64-unknown-linux-gnu"
6
7 @.str76843 = external constant [45 x i8] ; <[45 x i8]*> [#uses=1]
8 @__profiling_callsite_timestamps_live = external global [1216 x i64] ; <[1216 x i64]*> [#uses=2]
9
10 define i32 @cl_init(i32 %initoptions) nounwind {
11 entry:
12 %retval.i = alloca i32 ; <i32*> [#uses=3]
13 %retval = alloca i32 ; <i32*> [#uses=2]
14 %initoptions.addr = alloca i32 ; <i32*> [#uses=2]
15 tail call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
16 %0 = tail call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
17 store i32 %initoptions, i32* %initoptions.addr
18 %1 = bitcast i32* %initoptions.addr to { }* ; <{ }*> [#uses=0]
19 call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
20 %2 = call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
21 %call.i = call i32 @lt_dlinit() nounwind ; <i32> [#uses=1]
22 %tobool.i = icmp ne i32 %call.i, 0 ; <i1> [#uses=1]
23 br i1 %tobool.i, label %if.then.i, label %if.end.i
24
25 if.then.i: ; preds = %entry
26 %call1.i = call i32 @warn_dlerror(i8* getelementptr inbounds ([45 x i8]* @.str76843, i32 0, i32 0)) nounwind ; <i32> [#uses=0]
27 store i32 -1, i32* %retval.i
28 br label %lt_init.exit
29
30 if.end.i: ; preds = %entry
31 store i32 0, i32* %retval.i
32 br label %lt_init.exit
33
34 lt_init.exit: ; preds = %if.end.i, %if.then.i
35 %3 = load i32* %retval.i ; <i32> [#uses=1]
36 call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
37 %4 = call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
38 %5 = sub i64 %4, %2 ; <i64> [#uses=1]
39 %6 = atomicrmw add i64* getelementptr inbounds ([1216 x i64]* @__profiling_callsite_timestamps_live, i32 0, i32 51), i64 %5 monotonic
40 ;CHECK: lock
41 ;CHECK-NEXT: {{xadd|addq}} %rdx, __profiling_callsite_timestamps_live
42 ;CHECK-NEXT: cmpl $0,
43 ;CHECK-NEXT: jne
44 %cmp = icmp eq i32 %3, 0 ; <i1> [#uses=1]
45 br i1 %cmp, label %if.then, label %if.end
46
47 if.then: ; preds = %lt_init.exit
48 call void @cli_rarload()
49 br label %if.end
50
51 if.end: ; preds = %if.then, %lt_init.exit
52 store i32 0, i32* %retval
53 %7 = load i32* %retval ; <i32> [#uses=1]
54 tail call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
55 %8 = tail call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
56 %9 = sub i64 %8, %0 ; <i64> [#uses=1]
57 %10 = atomicrmw add i64* getelementptr inbounds ([1216 x i64]* @__profiling_callsite_timestamps_live, i32 0, i32 50), i64 %9 monotonic
58 ret i32 %7
59 }
60
61 declare void @cli_rarload() nounwind
62
63 declare i32 @lt_dlinit()
64
65 declare i32 @warn_dlerror(i8*) nounwind
66
67 declare i64 @llvm.readcyclecounter() nounwind