llvm-project/llvm/test/Transforms/InstCombine/multi-use-or.ll

25 lines
1.1 KiB
LLVM

; RUN: opt < %s -instcombine -S | grep {add double .sx, .sy}
; The 'or' has multiple uses, make sure that this doesn't prevent instcombine
; from propagating the extends to the truncs.
define double @ScaleObjectAdd(double %sx, double %sy, double %sz) nounwind {
entry:
%sx34 = bitcast double %sx to i64 ; <i64> [#uses=1]
%sx3435 = zext i64 %sx34 to i192 ; <i192> [#uses=1]
%sy22 = bitcast double %sy to i64 ; <i64> [#uses=1]
%sy2223 = zext i64 %sy22 to i192 ; <i192> [#uses=1]
%sy222324 = shl i192 %sy2223, 128 ; <i192> [#uses=1]
%sy222324.ins = or i192 %sx3435, %sy222324 ; <i192> [#uses=1]
%a = trunc i192 %sy222324.ins to i64 ; <i64> [#uses=1]
%b = bitcast i64 %a to double ; <double> [#uses=1]
%c = lshr i192 %sy222324.ins, 128 ; <i192> [#uses=1]
%d = trunc i192 %c to i64 ; <i64> [#uses=1]
%e = bitcast i64 %d to double ; <double> [#uses=1]
%f = fadd double %b, %e
; ret double %e
ret double %f
}