propagate-ir-flags.ll
757 Bytes
; RUN: opt < %s -newgvn -S | FileCheck %s
; CHECK-LABEL: func_fast
; CHECK: fadd fast double
; CHECK-NEXT: store
; CHECK-NEXT: ret
define double @func_fast(double %a, double %b) {
entry:
%a.addr = alloca double, align 8
%add = fadd fast double %b, 3.000000e+00
store double %add, double* %a.addr, align 8
%load_add = load double, double* %a.addr, align 8
ret double %load_add
}
; CHECK-LABEL: func_no_fast
; CHECK: fadd double
; CHECK-NEXT: store
; CHECK-NEXT: ret
define double @func_no_fast(double %a, double %b) {
entry:
%a.addr = alloca double, align 8
%add = fadd fast double %b, 3.000000e+00
store double %add, double* %a.addr, align 8
%duplicated_add = fadd double %b, 3.000000e+00
ret double %duplicated_add
}