1*9880d681SAndroid Build Coastguard Worker; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefix=X32 3*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=-sse2 | FileCheck %s --check-prefix=X64 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; It doesn't matter if an x86-64 target has specified "no-sse2"; we still can use mfence. 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Workerdefine void @test() { 8*9880d681SAndroid Build Coastguard Worker; X32-LABEL: test: 9*9880d681SAndroid Build Coastguard Worker; X32: # BB#0: 10*9880d681SAndroid Build Coastguard Worker; X32-NEXT: mfence 11*9880d681SAndroid Build Coastguard Worker; X32-NEXT: retl 12*9880d681SAndroid Build Coastguard Worker; 13*9880d681SAndroid Build Coastguard Worker; X64-LABEL: test: 14*9880d681SAndroid Build Coastguard Worker; X64: # BB#0: 15*9880d681SAndroid Build Coastguard Worker; X64-NEXT: mfence 16*9880d681SAndroid Build Coastguard Worker; X64-NEXT: retq 17*9880d681SAndroid Build Coastguard Worker fence seq_cst 18*9880d681SAndroid Build Coastguard Worker ret void 19*9880d681SAndroid Build Coastguard Worker} 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerdefine i32 @fence(i32* %ptr) { 22*9880d681SAndroid Build Coastguard Worker; X32-LABEL: fence: 23*9880d681SAndroid Build Coastguard Worker; X32: # BB#0: 24*9880d681SAndroid Build Coastguard Worker; X32-NEXT: movl {{[0-9]+}}(%esp), %eax 25*9880d681SAndroid Build Coastguard Worker; X32-NEXT: mfence 26*9880d681SAndroid Build Coastguard Worker; X32-NEXT: movl (%eax), %eax 27*9880d681SAndroid Build Coastguard Worker; X32-NEXT: retl 28*9880d681SAndroid Build Coastguard Worker; 29*9880d681SAndroid Build Coastguard Worker; X64-LABEL: fence: 30*9880d681SAndroid Build Coastguard Worker; X64: # BB#0: 31*9880d681SAndroid Build Coastguard Worker; X64-NEXT: mfence 32*9880d681SAndroid Build Coastguard Worker; X64-NEXT: movl (%rdi), %eax 33*9880d681SAndroid Build Coastguard Worker; X64-NEXT: retq 34*9880d681SAndroid Build Coastguard Worker %atomic = atomicrmw add i32* %ptr, i32 0 seq_cst 35*9880d681SAndroid Build Coastguard Worker ret i32 %atomic 36*9880d681SAndroid Build Coastguard Worker} 37*9880d681SAndroid Build Coastguard Worker 38