19 lines
533 B
LLVM
19 lines
533 B
LLVM
; Test atomic double addition. Expect a compare-and-swap loop.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
define double @f1(ptr %src, double %b) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: ld [[F:%f[0-9]+]], 0(%r2)
|
|
; CHECK: [[L:\.L.+]]:
|
|
; CHECK: lgdr [[RI:%r[0-9]+]], [[F]]
|
|
; CHECK: adbr [[F]], %f0
|
|
; CHECK: lgdr [[RO:%r[0-9]+]], [[F]]
|
|
; CHECK: csg [[RI]], [[RO]], 0(%r2)
|
|
; CHECK: ldgr [[F]], [[RI]]
|
|
; CHECK: jl [[L]]
|
|
; CHECK: ldr %f0, [[F]]
|
|
; CHECK: br %r14
|
|
%res = atomicrmw fadd ptr %src, double %b seq_cst
|
|
ret double %res
|
|
}
|