68 lines
1.7 KiB
LLVM
68 lines
1.7 KiB
LLVM
; Test 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
|
|
|
|
; Test f64->f32.
|
|
define float @f1(double %d1, double %d2) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK-SCALAR: ledbr %f0, %f2
|
|
; CHECK-VECTOR: ledbra %f0, 0, %f2, 0
|
|
; CHECK: br %r14
|
|
%res = fptrunc double %d2 to float
|
|
ret float %res
|
|
}
|
|
|
|
; Test f128->f32.
|
|
define float @f2(fp128 *%ptr) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: lexbr %f0, %f0
|
|
; CHECK: br %r14
|
|
%val = load fp128, fp128 *%ptr
|
|
%res = fptrunc fp128 %val to float
|
|
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) {
|
|
; 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 = fptrunc fp128 %val to float
|
|
%res = fadd float %conv, %d2
|
|
store float %res, float *%dst
|
|
ret void
|
|
}
|
|
|
|
; Test f128->f64.
|
|
define double @f4(fp128 *%ptr) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: ldxbr %f0, %f0
|
|
; CHECK: br %r14
|
|
%val = load fp128, fp128 *%ptr
|
|
%res = fptrunc fp128 %val to double
|
|
ret double %res
|
|
}
|
|
|
|
; Like f3, but for f128->f64.
|
|
define void @f5(double *%dst, fp128 *%ptr, double %d1, double %d2) {
|
|
; 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 = fptrunc fp128 %val to double
|
|
%res = fadd double %conv, %d2
|
|
store double %res, double *%dst
|
|
ret void
|
|
}
|