llvm-6502/test/CodeGen/R600/llvm.AMDGPU.rcp.f64.ll

31 lines
1.1 KiB
LLVM

; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
declare double @llvm.AMDGPU.rcp.f64(double) nounwind readnone
declare double @llvm.sqrt.f64(double) nounwind readnone
; FUNC-LABEL: {{^}}rcp_f64:
; SI: V_RCP_F64_e32
define void @rcp_f64(double addrspace(1)* %out, double %src) nounwind {
%rcp = call double @llvm.AMDGPU.rcp.f64(double %src) nounwind readnone
store double %rcp, double addrspace(1)* %out, align 8
ret void
}
; FUNC-LABEL: {{^}}rcp_pat_f64:
; SI: V_RCP_F64_e32
define void @rcp_pat_f64(double addrspace(1)* %out, double %src) nounwind {
%rcp = fdiv double 1.0, %src
store double %rcp, double addrspace(1)* %out, align 8
ret void
}
; FUNC-LABEL: {{^}}rsq_rcp_pat_f64:
; SI-UNSAFE: V_RSQ_F64_e32
; SI-SAFE-NOT: V_RSQ_F64_e32
define void @rsq_rcp_pat_f64(double addrspace(1)* %out, double %src) nounwind {
%sqrt = call double @llvm.sqrt.f64(double %src) nounwind readnone
%rcp = call double @llvm.AMDGPU.rcp.f64(double %sqrt) nounwind readnone
store double %rcp, double addrspace(1)* %out, align 8
ret void
}