28 lines
787 B
LLVM
28 lines
787 B
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-apple-darwin -march=ppc32 | FileCheck %s
|
|
|
|
define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
|
|
; CHECK-LABEL: exchange_and_add:
|
|
; CHECK: lwarx {{r[0-9]+}}, 0, {{r[0-9]+}}
|
|
%tmp = atomicrmw add i32* %mem, i32 %val monotonic
|
|
; CHECK: stwcx. {{r[0-9]+}}, 0, {{r[0-9]+}}
|
|
ret i32 %tmp
|
|
}
|
|
|
|
define i32 @exchange_and_cmp(i32* %mem) nounwind {
|
|
; CHECK-LABEL: exchange_and_cmp:
|
|
; CHECK: lwarx
|
|
%tmppair = cmpxchg i32* %mem, i32 0, i32 1 monotonic monotonic
|
|
%tmp = extractvalue { i32, i1 } %tmppair, 0
|
|
; CHECK: stwcx.
|
|
; CHECK: stwcx.
|
|
ret i32 %tmp
|
|
}
|
|
|
|
define i32 @exchange(i32* %mem, i32 %val) nounwind {
|
|
; CHECK-LABEL: exchange:
|
|
; CHECK: lwarx
|
|
%tmp = atomicrmw xchg i32* %mem, i32 1 monotonic
|
|
; CHECK: stwcx.
|
|
ret i32 %tmp
|
|
}
|