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[PowerPC] Complete setting the baseline for ppc64le

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Patch by Nemanja Ivanovic.

As was uncovered by the failing test case (when run on non-PPC
platforms), the feature set when compiling with -march=ppc64le was not
being picked up. This change ensures that if the -mcpu option is not
specified, the correct feature set is picked up regardless of whether
we are on PPC or not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227455 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Schmidt 2015-01-29 15:59:09 +00:00
parent f316f2ea52
commit a5ea0b50a4
2 changed files with 10 additions and 2 deletions
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9
lib/Target/PowerPC/PPCSubtarget.cpp
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@ -95,8 +95,13 @@ void PPCSubtarget::initializeEnvironment() {
void PPCSubtarget::initSubtargetFeatures(StringRef CPU, StringRef FS) {
// Determine default and user specified characteristics
std::string CPUName = CPU;
if (CPUName.empty())
CPUName = "generic";
if (CPUName.empty()) {
// If cross-compiling with -march=ppc64le without -mcpu
if (TargetTriple.getArch() == Triple::ppc64le)
CPUName = "ppc64le";
else
CPUName = "generic";
}
#if (defined(__APPLE__) || defined(__linux__)) && \
(defined(__ppc__) || defined(__powerpc__))
if (CPUName == "generic")

3
test/CodeGen/PowerPC/ppc64le-aggregates.ll
View File

@ -1,8 +1,11 @@
; RUN: llc < %s -march=ppc64le -mcpu=pwr8 -mattr=+altivec -mattr=-vsx | FileCheck %s
; RUN: llc < %s -march=ppc64le -mattr=+altivec -mattr=-vsx | FileCheck %s
; Currently VSX support is disabled for this test because we generate lxsdx
; instead of lfd, and stxsdx instead of stfd. That is a poor choice when we
; have reg+imm addressing, and is on the list of things to be fixed.
; The second run step is to ensure that -march=ppc64le is adequate to select
; the same feature set as with -mcpu=pwr8 since that is the baseline for ppc64le.
target datalayout = "e-m:e-i64:64-n32:64"
target triple = "powerpc64le-unknown-linux-gnu"