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 68
