98 lines
3.8 KiB
LLVM
98 lines
3.8 KiB
LLVM
|
; Test strict floating-point truncations.
|
||
|
|
;
|
||
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
|
||
|
|
; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
|
||
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 \
|
||
|
|
; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-VECTOR %s
|
||
|
|
|
||
|
|
declare float @llvm.experimental.constrained.fptrunc.f32.f64(double, metadata, metadata)
|
||
|
|
declare float @llvm.experimental.constrained.fptrunc.f32.f128(fp128, metadata, metadata)
|
||
|
|
declare double @llvm.experimental.constrained.fptrunc.f64.f128(fp128, metadata, metadata)
|
||
|
|
|
||
|
|
declare float @llvm.experimental.constrained.fadd.f32(float, float, metadata, metadata)
|
||
|
|
declare double @llvm.experimental.constrained.fadd.f64(double, double, metadata, metadata)
|
||
|
|
|
||
|
|
; Test f64->f32.
|
||
|
|
define float @f1(double %d1, double %d2) #0 {
|
||
|
|
; CHECK-LABEL: f1:
|
||
|
|
; CHECK-SCALAR: ledbr %f0, %f2
|
||
|
|
; CHECK-VECTOR: ledbra %f0, 0, %f2, 0
|
||
|
|
; CHECK: br %r14
|
||
|
|
%res = call float @llvm.experimental.constrained.fptrunc.f32.f64(
|
||
|
|
double %d2,
|
||
|
|
metadata !"round.dynamic",
|
||
|
|
metadata !"fpexcept.strict") #0
|
||
|
|
ret float %res
|
||
|
|
}
|
||
|
|
|
||
|
|
; Test f128->f32.
|
||
|
|
define float @f2(fp128 *%ptr) #0 {
|
||
|
|
; CHECK-LABEL: f2:
|
||
|
|
; CHECK: lexbr %f0, %f0
|
||
|
|
; CHECK: br %r14
|
||
|
|
%val = load fp128, fp128 *%ptr
|
||
|
|
%res = call float @llvm.experimental.constrained.fptrunc.f32.f128(
|
||
|
|
fp128 %val,
|
||
|
|
metadata !"round.dynamic",
|
||
|
|
metadata !"fpexcept.strict") #0
|
||
|
|
ret float %res
|
||
|
|
}
|
||
|
|
|
||
|
|
; Make sure that we don't use %f0 as the destination of LEXBR when %f2
|
||
|
|
; is still live.
|
||
|
|
define void @f3(float *%dst, fp128 *%ptr, float %d1, float %d2) #0 {
|
||
|
|
; CHECK-LABEL: f3:
|
||
|
|
; CHECK: lexbr %f1, %f1
|
||
|
|
; CHECK: aebr %f1, %f2
|
||
|
|
; CHECK: ste %f1, 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%val = load fp128, fp128 *%ptr
|
||
|
|
%conv = call float @llvm.experimental.constrained.fptrunc.f32.f128(
|
||
|
|
fp128 %val,
|
||
|
|
metadata !"round.dynamic",
|
||
|
|
metadata !"fpexcept.strict") #0
|
||
|
|
%res = call float @llvm.experimental.constrained.fadd.f32(
|
||
|
|
float %conv, float %d2,
|
||
|
|
metadata !"round.dynamic",
|
||
|
|
metadata !"fpexcept.strict") #0
|
||
|
|
store float %res, float *%dst
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Test f128->f64.
|
||
|
|
define double @f4(fp128 *%ptr) #0 {
|
||
|
|
; CHECK-LABEL: f4:
|
||
|
|
; CHECK: ldxbr %f0, %f0
|
||
|
|
; CHECK: br %r14
|
||
|
|
%val = load fp128, fp128 *%ptr
|
||
|
|
%res = call double @llvm.experimental.constrained.fptrunc.f64.f128(
|
||
|
|
fp128 %val,
|
||
|
|
metadata !"round.dynamic",
|
||
|
|
metadata !"fpexcept.strict") #0
|
||
|
|
ret double %res
|
||
|
|
}
|
||
|
|
|
||
|
|
; Like f3, but for f128->f64.
|
||
|
|
define void @f5(double *%dst, fp128 *%ptr, double %d1, double %d2) #0 {
|
||
|
|
; CHECK-LABEL: f5:
|
||
|
|
; CHECK: ldxbr %f1, %f1
|
||
|
|
; CHECK-SCALAR: adbr %f1, %f2
|
||
|
|
; CHECK-SCALAR: std %f1, 0(%r2)
|
||
|
|
; CHECK-VECTOR: wfadb [[REG:%f[0-9]+]], %f1, %f2
|
||
|
|
; CHECK-VECTOR: std [[REG]], 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%val = load fp128, fp128 *%ptr
|
||
|
|
%conv = call double @llvm.experimental.constrained.fptrunc.f64.f128(
|
||
|
|
fp128 %val,
|
||
|
|
metadata !"round.dynamic",
|
||
|
|
metadata !"fpexcept.strict") #0
|
||
|
|
%res = call double @llvm.experimental.constrained.fadd.f64(
|
||
|
|
double %conv, double %d2,
|
||
|
|
metadata !"round.dynamic",
|
||
|
|
metadata !"fpexcept.strict") #0
|
||
|
|
store double %res, double *%dst
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
attributes #0 = { strictfp }
|