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1; Test floating-point truncations.2;3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \4; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s5; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 \6; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-VECTOR %s7 8; Test f64->f32.9define float @f1(double %d1, double %d2) {10; CHECK-LABEL: f1:11; CHECK-SCALAR: ledbr %f0, %f212; CHECK-VECTOR: ledbra %f0, 0, %f2, 013; CHECK: br %r1414 %res = fptrunc double %d2 to float15 ret float %res16}17 18; Test f128->f32.19define float @f2(ptr %ptr) {20; CHECK-LABEL: f2:21; CHECK: lexbr %f0, %f022; CHECK: br %r1423 %val = load fp128, ptr %ptr24 %res = fptrunc fp128 %val to float25 ret float %res26}27 28; Make sure that we don't use %f0 as the destination of LEXBR when %f229; is still live.30define void @f3(ptr %dst, ptr %ptr, float %d1, float %d2) {31; CHECK-LABEL: f3:32; CHECK: lexbr %f1, %f133; CHECK: aebr %f1, %f234; CHECK: ste %f1, 0(%r2)35; CHECK: br %r1436 %val = load fp128, ptr %ptr37 %conv = fptrunc fp128 %val to float38 %res = fadd float %conv, %d239 store float %res, ptr %dst40 ret void41}42 43; Test f128->f64.44define double @f4(ptr %ptr) {45; CHECK-LABEL: f4:46; CHECK: ldxbr %f0, %f047; CHECK: br %r1448 %val = load fp128, ptr %ptr49 %res = fptrunc fp128 %val to double50 ret double %res51}52 53; Like f3, but for f128->f64.54define void @f5(ptr %dst, ptr %ptr, double %d1, double %d2) {55; CHECK-LABEL: f5:56; CHECK: ldxbr %f1, %f157; CHECK-SCALAR: adbr %f1, %f258; CHECK-SCALAR: std %f1, 0(%r2)59; CHECK-VECTOR: wfadb [[REG:%f[0-9]+]], %f1, %f260; CHECK-VECTOR: std [[REG]], 0(%r2)61; CHECK: br %r1462 %val = load fp128, ptr %ptr63 %conv = fptrunc fp128 %val to double64 %res = fadd double %conv, %d265 store double %res, ptr %dst66 ret void67}68