pow-3.ll
2.21 KB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -disable-simplify-libcalls -instcombine -S | FileCheck %s
declare double @llvm.pow.f64(double, double)
declare double @pow(double, double)
define double @sqrt_libcall(double %x) {
; CHECK-LABEL: @sqrt_libcall(
; CHECK-NEXT: [[RETVAL:%.*]] = call double @pow(double [[X:%.*]], double 5.000000e-01)
; CHECK-NEXT: ret double [[RETVAL]]
;
%retval = call double @pow(double %x, double 0.5)
ret double %retval
}
define double @sqrt_intrinsic(double %x) {
; CHECK-LABEL: @sqrt_intrinsic(
; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.sqrt.f64(double [[X:%.*]])
; CHECK-NEXT: [[ABS:%.*]] = call double @llvm.fabs.f64(double [[SQRT]])
; CHECK-NEXT: [[ISINF:%.*]] = fcmp oeq double [[X]], 0xFFF0000000000000
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[ISINF]], double 0x7FF0000000000000, double [[ABS]]
; CHECK-NEXT: ret double [[TMP1]]
;
%retval = call double @llvm.pow.f64(double %x, double 0.5)
ret double %retval
}
; Shrinking is disabled too.
define float @shrink_libcall(float %f, float %g) {
; CHECK-LABEL: @shrink_libcall(
; CHECK-NEXT: [[DF:%.*]] = fpext float [[F:%.*]] to double
; CHECK-NEXT: [[DG:%.*]] = fpext float [[G:%.*]] to double
; CHECK-NEXT: [[CALL:%.*]] = call fast double @pow(double [[DF]], double [[DG]])
; CHECK-NEXT: [[FR:%.*]] = fptrunc double [[CALL]] to float
; CHECK-NEXT: ret float [[FR]]
;
%df = fpext float %f to double
%dg = fpext float %g to double
%call = call fast double @pow(double %df, double %dg)
%fr = fptrunc double %call to float
ret float %fr
}
; Shrinking is disabled for the intrinsic too.
define float @shrink_intrinsic(float %f, float %g) {
; CHECK-LABEL: @shrink_intrinsic(
; CHECK-NEXT: [[DF:%.*]] = fpext float [[F:%.*]] to double
; CHECK-NEXT: [[DG:%.*]] = fpext float [[G:%.*]] to double
; CHECK-NEXT: [[CALL:%.*]] = call fast double @llvm.pow.f64(double [[DF]], double [[DG]])
; CHECK-NEXT: [[FR:%.*]] = fptrunc double [[CALL]] to float
; CHECK-NEXT: ret float [[FR]]
;
%df = fpext float %f to double
%dg = fpext float %g to double
%call = call fast double @llvm.pow.f64(double %df, double %dg)
%fr = fptrunc double %call to float
ret float %fr
}