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