mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-26 04:32:44 +01:00
f3ab4849fb
Now that we have fneg, prefer using it over "fsub -0.0, ...". This helps in particular with strict FP tests, as fneg does not raise any exceptions.
47 lines
1.2 KiB
LLVM
47 lines
1.2 KiB
LLVM
; Test f64 and v2f64 absolute.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
|
|
|
|
declare double @llvm.fabs.f64(double)
|
|
declare <2 x double> @llvm.fabs.v2f64(<2 x double>)
|
|
|
|
; Test a plain absolute.
|
|
define <2 x double> @f1(<2 x double> %val) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: vflpdb %v24, %v24
|
|
; CHECK: br %r14
|
|
%ret = call <2 x double> @llvm.fabs.v2f64(<2 x double> %val)
|
|
ret <2 x double> %ret
|
|
}
|
|
|
|
; Test a negative absolute.
|
|
define <2 x double> @f2(<2 x double> %val) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: vflndb %v24, %v24
|
|
; CHECK: br %r14
|
|
%abs = call <2 x double> @llvm.fabs.v2f64(<2 x double> %val)
|
|
%ret = fneg <2 x double> %abs
|
|
ret <2 x double> %ret
|
|
}
|
|
|
|
; Test an f64 absolute that uses vector registers.
|
|
define double @f3(<2 x double> %val) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: wflpdb %f0, %v24
|
|
; CHECK: br %r14
|
|
%scalar = extractelement <2 x double> %val, i32 0
|
|
%ret = call double @llvm.fabs.f64(double %scalar)
|
|
ret double %ret
|
|
}
|
|
|
|
; Test an f64 negative absolute that uses vector registers.
|
|
define double @f4(<2 x double> %val) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: wflndb %f0, %v24
|
|
; CHECK: br %r14
|
|
%scalar = extractelement <2 x double> %val, i32 0
|
|
%abs = call double @llvm.fabs.f64(double %scalar)
|
|
%ret = fneg double %abs
|
|
ret double %ret
|
|
}
|