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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -march=nvptx64 | FileCheck %s
; RUN: %if ptxas %{ llc < %s -march=nvptx64 | %ptxas-verify %}
target triple = "nvptx64-nvidia-cuda"
;; Check if fneg (fdiv 1, X) lowers to fneg (rcp.rn X).
define double @test1(double %in) {
; CHECK-LABEL: test1(
; CHECK: {
; CHECK-NEXT: .reg .f64 %fd<4>;
; CHECK-EMPTY:
; CHECK-NEXT: // %bb.0:
; CHECK-NEXT: ld.param.f64 %fd1, [test1_param_0];
; CHECK-NEXT: rcp.rn.f64 %fd2, %fd1;
; CHECK-NEXT: neg.f64 %fd3, %fd2;
; CHECK-NEXT: st.param.f64 [func_retval0+0], %fd3;
; CHECK-NEXT: ret;
%div = fdiv double 1.000000e+00, %in
%neg = fsub double -0.000000e+00, %div
ret double %neg
}
;; Check if fdiv -1, X lowers to fneg (rcp.rn X).
define double @test2(double %in) {
; CHECK-LABEL: test2(
; CHECK: {
; CHECK-NEXT: .reg .f64 %fd<4>;
; CHECK-EMPTY:
; CHECK-NEXT: // %bb.0:
; CHECK-NEXT: ld.param.f64 %fd1, [test2_param_0];
; CHECK-NEXT: rcp.rn.f64 %fd2, %fd1;
; CHECK-NEXT: neg.f64 %fd3, %fd2;
; CHECK-NEXT: st.param.f64 [func_retval0+0], %fd3;
; CHECK-NEXT: ret;
%div = fdiv double -1.000000e+00, %in
ret double %div
}
;; Check if fdiv 1, (fneg X) lowers to fneg (rcp.rn X).
define double @test3(double %in) {
; CHECK-LABEL: test3(
; CHECK: {
; CHECK-NEXT: .reg .f64 %fd<4>;
; CHECK-EMPTY:
; CHECK-NEXT: // %bb.0:
; CHECK-NEXT: ld.param.f64 %fd1, [test3_param_0];
; CHECK-NEXT: rcp.rn.f64 %fd2, %fd1;
; CHECK-NEXT: neg.f64 %fd3, %fd2;
; CHECK-NEXT: st.param.f64 [func_retval0+0], %fd3;
; CHECK-NEXT: ret;
%neg = fsub double -0.000000e+00, %in
%div = fdiv double 1.000000e+00, %neg
ret double %div
}
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