mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 00:12:50 +01:00
e6df0e6397
LLC was scheduling compares before the adds causing wrong branches to be taken in programs, resulting in misoptimized code wherever atomic adds where used. llvm-svn: 84485
70 lines
3.5 KiB
LLVM
70 lines
3.5 KiB
LLVM
; RUN: llvm-as <%s | llc | FileCheck %s
|
|
; PR 5247
|
|
; check that cmp is not scheduled before the add
|
|
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"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@.str76843 = external constant [45 x i8] ; <[45 x i8]*> [#uses=1]
|
|
@__profiling_callsite_timestamps_live = external global [1216 x i64] ; <[1216 x i64]*> [#uses=2]
|
|
|
|
define i32 @cl_init(i32 %initoptions) nounwind {
|
|
entry:
|
|
%retval.i = alloca i32 ; <i32*> [#uses=3]
|
|
%retval = alloca i32 ; <i32*> [#uses=2]
|
|
%initoptions.addr = alloca i32 ; <i32*> [#uses=2]
|
|
tail call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
|
|
%0 = tail call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
|
|
store i32 %initoptions, i32* %initoptions.addr
|
|
%1 = bitcast i32* %initoptions.addr to { }* ; <{ }*> [#uses=0]
|
|
call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
|
|
%2 = call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
|
|
%call.i = call i32 @lt_dlinit() nounwind ; <i32> [#uses=1]
|
|
%tobool.i = icmp ne i32 %call.i, 0 ; <i1> [#uses=1]
|
|
br i1 %tobool.i, label %if.then.i, label %if.end.i
|
|
|
|
if.then.i: ; preds = %entry
|
|
%call1.i = call i32 @warn_dlerror(i8* getelementptr inbounds ([45 x i8]* @.str76843, i32 0, i32 0)) nounwind ; <i32> [#uses=0]
|
|
store i32 -1, i32* %retval.i
|
|
br label %lt_init.exit
|
|
|
|
if.end.i: ; preds = %entry
|
|
store i32 0, i32* %retval.i
|
|
br label %lt_init.exit
|
|
|
|
lt_init.exit: ; preds = %if.end.i, %if.then.i
|
|
%3 = load i32* %retval.i ; <i32> [#uses=1]
|
|
call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
|
|
%4 = call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
|
|
%5 = sub i64 %4, %2 ; <i64> [#uses=1]
|
|
%6 = call i64 @llvm.atomic.load.add.i64.p0i64(i64* getelementptr inbounds ([1216 x i64]* @__profiling_callsite_timestamps_live, i32 0, i32 51), i64 %5) nounwind ; <i64> [#uses=0]
|
|
;CHECK: lock
|
|
;CHECK-NEXT: {{xadd|addq}} %rdx, __profiling_callsite_timestamps_live
|
|
;CHECK-NEXT: cmpl $0,
|
|
;CHECK-NEXT: jne
|
|
%cmp = icmp eq i32 %3, 0 ; <i1> [#uses=1]
|
|
br i1 %cmp, label %if.then, label %if.end
|
|
|
|
if.then: ; preds = %lt_init.exit
|
|
call void @cli_rarload()
|
|
br label %if.end
|
|
|
|
if.end: ; preds = %if.then, %lt_init.exit
|
|
store i32 0, i32* %retval
|
|
%7 = load i32* %retval ; <i32> [#uses=1]
|
|
tail call void asm sideeffect "cpuid", "~{ax},~{bx},~{cx},~{dx},~{memory},~{dirflag},~{fpsr},~{flags}"() nounwind
|
|
%8 = tail call i64 @llvm.readcyclecounter() nounwind ; <i64> [#uses=1]
|
|
%9 = sub i64 %8, %0 ; <i64> [#uses=1]
|
|
%10 = call i64 @llvm.atomic.load.add.i64.p0i64(i64* getelementptr inbounds ([1216 x i64]* @__profiling_callsite_timestamps_live, i32 0, i32 50), i64 %9) ; <i64> [#uses=0]
|
|
ret i32 %7
|
|
}
|
|
|
|
declare void @cli_rarload() nounwind
|
|
|
|
declare i32 @lt_dlinit()
|
|
|
|
declare i32 @warn_dlerror(i8*) nounwind
|
|
|
|
declare i64 @llvm.atomic.load.add.i64.p0i64(i64* nocapture, i64) nounwind
|
|
|
|
declare i64 @llvm.readcyclecounter() nounwind
|