45 lines
1.6 KiB
LLVM
45 lines
1.6 KiB
LLVM
; Test f128 signaling comparisons on z14.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
|
|
|
|
; There is no memory form of 128-bit comparison.
|
|
define i64 @f1(i64 %a, i64 %b, fp128 *%ptr1, fp128 *%ptr2) #0 {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4)
|
|
; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r5)
|
|
; CHECK: wfkxb [[REG1]], [[REG2]]
|
|
; CHECK-NEXT: locgrne %r2, %r3
|
|
; CHECK: br %r14
|
|
%f1 = load fp128, fp128 *%ptr1
|
|
%f2 = load fp128, fp128 *%ptr2
|
|
%cond = call i1 @llvm.experimental.constrained.fcmps.f128(
|
|
fp128 %f1, fp128 %f2,
|
|
metadata !"oeq",
|
|
metadata !"fpexcept.strict") #0
|
|
%res = select i1 %cond, i64 %a, i64 %b
|
|
ret i64 %res
|
|
}
|
|
|
|
; Check comparison with zero -- it is not worthwhile to copy to
|
|
; FP pairs just so we can use LTXBR, so simply load up a zero.
|
|
define i64 @f2(i64 %a, i64 %b, fp128 *%ptr) #0 {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4)
|
|
; CHECK-DAG: vzero [[REG2:%v[0-9]+]]
|
|
; CHECK: wfkxb [[REG1]], [[REG2]]
|
|
; CHECK-NEXT: locgrne %r2, %r3
|
|
; CHECK: br %r14
|
|
%f = load fp128, fp128 *%ptr
|
|
%cond = call i1 @llvm.experimental.constrained.fcmps.f128(
|
|
fp128 %f, fp128 0xL00000000000000000000000000000000,
|
|
metadata !"oeq",
|
|
metadata !"fpexcept.strict") #0
|
|
%res = select i1 %cond, i64 %a, i64 %b
|
|
ret i64 %res
|
|
}
|
|
|
|
attributes #0 = { strictfp }
|
|
|
|
declare i1 @llvm.experimental.constrained.fcmps.f128(fp128, fp128, metadata, metadata)
|
|
|