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Vendor import of llvm trunk r291015:

Browse Source 
https://llvm.org/svn/llvm-project/llvm/trunk@291015
This commit is contained in:
dim 2017-01-04 22:25:16 +00:00
parent 7386cafc7d
commit 7866900e1f
4 changed files with 31 additions and 4 deletions
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4
include/llvm/Support/FileSystem.h
View File

@ -858,7 +858,7 @@ public:
// No operator++ because we need error_code.
recursive_directory_iterator &increment(std::error_code &ec) {
const directory_iterator end_itr;
const directory_iterator end_itr = {};
if (State->HasNoPushRequest)
State->HasNoPushRequest = false;
@ -905,7 +905,7 @@ public:
assert(State && "Cannot pop an end iterator!");
assert(State->Level > 0 && "Cannot pop an iterator with level < 1");
const directory_iterator end_itr;
const directory_iterator end_itr = {};
std::error_code ec;
do {
if (ec)

6
lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
View File

@ -428,7 +428,11 @@ SDValue DAGTypeLegalizer::PromoteIntRes_FP_TO_XINT(SDNode *N) {
// Assert that the converted value fits in the original type. If it doesn't
// (eg: because the value being converted is too big), then the result of the
// original operation was undefined anyway, so the assert is still correct.
return DAG.getNode(NewOpc == ISD::FP_TO_UINT ?
//
// NOTE: fp-to-uint to fp-to-sint promotion guarantees zero extend. For example:
// before legalization: fp-to-uint16, 65534. -> 0xfffe
// after legalization: fp-to-sint32, 65534. -> 0x0000fffe
return DAG.getNode(N->getOpcode() == ISD::FP_TO_UINT ?
ISD::AssertZext : ISD::AssertSext, dl, NVT, Res,
DAG.getValueType(N->getValueType(0).getScalarType()));
}

4
test/CodeGen/AArch64/fptouint-i8-zext.ll
View File

@ -3,9 +3,11 @@
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64"
; If the float value is negative or too large, the result is undefined anyway;
; otherwise, fcvtzs must returns a value in [0, 256), which guarantees zext.
; CHECK-LABEL: float_char_int_func:
; CHECK: fcvtzs [[A:w[0-9]+]], s0
; CHECK-NEXT: and w0, [[A]], #0xff
; CHECK-NEXT: ret
define i32 @float_char_int_func(float %infloatVal) {
entry:

21
test/CodeGen/PowerPC/fp64-to-int16.ll Normal file
View File

@ -0,0 +1,21 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -O0 < %s | FileCheck %s
target triple = "powerpc64le--linux-gnu"
define i1 @Test(double %a) {
; CHECK-LABEL: Test:
; CHECK: # BB#0: # %entry
; CHECK-NEXT: xscvdpsxws 1, 1
; CHECK-NEXT: mfvsrwz 3, 1
; CHECK-NEXT: xori 3, 3, 65534
; CHECK-NEXT: cntlzw 3, 3
; CHECK-NEXT: srwi 3, 3, 5
; CHECK-NEXT: # implicit-def: %X4
; CHECK-NEXT: mr 4, 3
; CHECK-NEXT: mr 3, 4
; CHECK-NEXT: blr
entry:
%conv = fptoui double %a to i16
%cmp = icmp eq i16 %conv, -2
ret i1 %cmp
}