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fix another libgcc blocker

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59026 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2008-11-11 06:06:07 +00:00
parent 00ec49b6ba
commit 683a922653
2 changed files with 23 additions and 0 deletions
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1
lib/Target/Alpha/AlphaISelLowering.cpp
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@ -97,6 +97,7 @@ AlphaTargetLowering::AlphaTargetLowering(TargetMachine &TM) : TargetLowering(TM)
setOperationAction(ISD::SUBE , MVT::i64, Expand);
setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
// We don't support sin/cos/sqrt/pow

22
test/CodeGen/Alpha/2008-11-10-smul_lohi.ll Normal file
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@ -0,0 +1,22 @@
; RUN: llvm-as < %s | llc -march=alpha
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-f128:128:128"
target triple = "alphaev6-unknown-linux-gnu"
define i64 @__mulvdi3(i64 %a, i64 %b) nounwind {
entry:
%0 = sext i64 %a to i128 ; <i128> [#uses=1]
%1 = sext i64 %b to i128 ; <i128> [#uses=1]
%2 = mul i128 %1, %0 ; <i128> [#uses=2]
%3 = lshr i128 %2, 64 ; <i128> [#uses=1]
%4 = trunc i128 %3 to i64 ; <i64> [#uses=1]
%5 = trunc i128 %2 to i64 ; <i64> [#uses=1]
%6 = icmp eq i64 %4, 0 ; <i1> [#uses=1]
br i1 %6, label %bb1, label %bb
bb: ; preds = %entry
unreachable
bb1: ; preds = %entry
ret i64 %5
}