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 %s 5 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 \ 6 ; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-VECTOR %s 7 8 ; Test f64->f32. 9 define float @f1(double %d1, double %d2) { 10 ; CHECK-LABEL: f1: 11 ; CHECK-SCALAR: ledbr %f0, %f2 12 ; CHECK-VECTOR: ledbra %f0, 0, %f2, 0 13 ; CHECK: br %r14 14 %res = fptrunc double %d2 to float 15 ret float %res 16 } 17 18 ; Test f128->f32. 19 define float @f2(fp128 *%ptr) { 20 ; CHECK-LABEL: f2: 21 ; CHECK: lexbr %f0, %f0 22 ; CHECK: br %r14 23 %val = load fp128 , fp128 *%ptr 24 %res = fptrunc fp128 %val to float 25 ret float %res 26 } 27 28 ; Make sure that we don't use %f0 as the destination of LEXBR when %f2 29 ; is still live. 30 define void @f3(float *%dst, fp128 *%ptr, float %d1, float %d2) { 31 ; CHECK-LABEL: f3: 32 ; CHECK: lexbr %f1, %f1 33 ; CHECK: aebr %f1, %f2 34 ; CHECK: ste %f1, 0(%r2) 35 ; CHECK: br %r14 36 %val = load fp128 , fp128 *%ptr 37 %conv = fptrunc fp128 %val to float 38 %res = fadd float %conv, %d2 39 store float %res, float *%dst 40 ret void 41 } 42 43 ; Test f128->f64. 44 define double @f4(fp128 *%ptr) { 45 ; CHECK-LABEL: f4: 46 ; CHECK: ldxbr %f0, %f0 47 ; CHECK: br %r14 48 %val = load fp128 , fp128 *%ptr 49 %res = fptrunc fp128 %val to double 50 ret double %res 51 } 52 53 ; Like f3, but for f128->f64. 54 define void @f5(double *%dst, fp128 *%ptr, double %d1, double %d2) { 55 ; CHECK-LABEL: f5: 56 ; CHECK: ldxbr %f1, %f1 57 ; CHECK-SCALAR: adbr %f1, %f2 58 ; CHECK-SCALAR: std %f1, 0(%r2) 59 ; CHECK-VECTOR: wfadb [[REG:%f[0-9]+]], %f1, %f2 60 ; CHECK-VECTOR: std [[REG]], 0(%r2) 61 ; CHECK: br %r14 62 %val = load fp128 , fp128 *%ptr 63 %conv = fptrunc fp128 %val to double 64 %res = fadd double %conv, %d2 65 store double %res, double *%dst 66 ret void 67 } 68
