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AVX-512: Fixed a bug in lowering setcc for MVT::i1 type

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224008 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Elena Demikhovsky 2014-12-11 10:21:12 +00:00
parent f3da1ac5d9
commit bcb1a626b6
2 changed files with 49 additions and 1 deletions
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5
lib/Target/X86/X86ISelLowering.cpp
View File

@ -15456,9 +15456,12 @@ SDValue X86TargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const {
cast<ConstantSDNode>(Op1)->isNullValue() &&
(CC == ISD::SETEQ || CC == ISD::SETNE)) {
SDValue NewSetCC = LowerToBT(Op0, CC, dl, DAG);
if (NewSetCC.getNode())
if (NewSetCC.getNode()) {
if (VT == MVT::i1)
return DAG.getNode(ISD::TRUNCATE, dl, MVT::i1, NewSetCC);
return NewSetCC;
}
}
// Look for X == 0, X == 1, X != 0, or X != 1. We can simplify some forms of
// these.

45
test/CodeGen/X86/avx512-i1test.ll Executable file
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@ -0,0 +1,45 @@
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=knl | FileCheck %s
; ModuleID = 'bugpoint-reduced-simplified.bc'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK-LABEL: func
; CHECK: kortestw
; CHECK: kortestw
define void @func() {
bb1:
br i1 undef, label %L_10, label %L_10
L_10: ; preds = %bb1, %bb1
br i1 undef, label %L_30, label %bb56
bb56: ; preds = %L_10
br label %bb33
bb33: ; preds = %bb51, %bb56
%r111 = load i64* undef, align 8
br i1 undef, label %bb51, label %bb35
bb35: ; preds = %bb33
br i1 undef, label %L_19, label %bb37
bb37: ; preds = %bb35
%r128 = and i64 %r111, 576460752303423488
%phitmp = icmp eq i64 %r128, 0
br label %L_19
L_19: ; preds = %bb37, %bb35
%"$V_S25.0" = phi i1 [ %phitmp, %bb37 ], [ true, %bb35 ]
br i1 undef, label %bb51, label %bb42
bb42: ; preds = %L_19
%r136 = select i1 %"$V_S25.0", i32* undef, i32* undef
br label %bb51
bb51: ; preds = %bb42, %L_19, %bb33
br i1 false, label %L_30, label %bb33
L_30: ; preds = %bb51, %L_10
ret void
}