From 009b1c42aa6266385f2c37e227516b24077e6dd7 Mon Sep 17 00:00:00 2001 From: Ed Schouten Date: Tue, 2 Jun 2009 17:52:33 +0000 Subject: Import LLVM, at r72732. --- test/Transforms/InstCombine/multi-use-or.ll | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 test/Transforms/InstCombine/multi-use-or.ll (limited to 'test/Transforms/InstCombine/multi-use-or.ll') diff --git a/test/Transforms/InstCombine/multi-use-or.ll b/test/Transforms/InstCombine/multi-use-or.ll new file mode 100644 index 0000000000000..85a8b34e2f6eb --- /dev/null +++ b/test/Transforms/InstCombine/multi-use-or.ll @@ -0,0 +1,24 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | 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 ; [#uses=1] + %sx3435 = zext i64 %sx34 to i192 ; [#uses=1] + %sy22 = bitcast double %sy to i64 ; [#uses=1] + %sy2223 = zext i64 %sy22 to i192 ; [#uses=1] + %sy222324 = shl i192 %sy2223, 128 ; [#uses=1] + %sy222324.ins = or i192 %sx3435, %sy222324 ; [#uses=1] + + + %a = trunc i192 %sy222324.ins to i64 ; [#uses=1] + %b = bitcast i64 %a to double ; [#uses=1] + %c = lshr i192 %sy222324.ins, 128 ; [#uses=1] + %d = trunc i192 %c to i64 ; [#uses=1] + %e = bitcast i64 %d to double ; [#uses=1] + %f = add double %b, %e + +; ret double %e + ret double %f +} -- cgit v1.2.3