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