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llvm-6502/test/CodeGen/Thumb2/buildvector-crash.ll

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ARM & AArch64: make use of common cmpxchg idioms after expansion The C and C++ semantics for compare_exchange require it to return a bool indicating success. This gets mapped to LLVM IR which follows each cmpxchg with an icmp of the value loaded against the desired value. When lowered to ldxr/stxr loops, this extra comparison is redundant: its results are implicit in the control-flow of the function. This commit makes two changes: it replaces that icmp with appropriate PHI nodes, and then makes sure earlyCSE is called after expansion to actually make use of the opportunities revealed. I've also added -{arm,aarch64}-enable-atomic-tidy options, so that existing fragile tests aren't perturbed too much by the change. Many of them either rely on undef/unreachable too pervasively to be restored to something well-defined (particularly while making sure they test the same obscure assert from many years ago), or depend on a particular CFG shape, which is disrupted by SimplifyCFG. rdar://problem/16227836 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209883 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-30 10:09:59 +00:00
; RUN: llc < %s -O3 -mtriple=thumbv7-apple-ios -arm-atomic-cfg-tidy=0 -mcpu=cortex-a8 | FileCheck %s
Fix crash introduced in 116852. 8573915. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116955 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:03:37 +00:00
; Formerly crashed, 3573915.
define void @RotateStarsFP_Vec() nounwind {
bb.nph372:
br label %bb8
bb8: ; preds = %bb8, %bb.nph372
%0 = fadd <4 x float> undef, <float 0xBFEE353F80000000, float 0xBFEE353F80000000, float 0xBFEE353F80000000, float 0xBFEE353F80000000>
%1 = fmul <4 x float> %0, undef
%2 = fmul <4 x float> %1, undef
%3 = fadd <4 x float> undef, %2
store <4 x float> %3, <4 x float>* undef, align 4
br label %bb8
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $NAME; then TEMP=`mktemp -t temp` cp $NAME $TEMP sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \ while read FUNC; do sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP done sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-14 06:24:09 +00:00
; CHECK-LABEL: RotateStarsFP_Vec:
Use vld1 / vst2 for unaligned v2f64 load / store. e.g. Use vld1.16 for 2-byte aligned address. Based on patch by David Peixotto. Also use vld1.64 / vst1.64 with 128-bit alignment to take advantage of alignment hints. rdar://12090772, rdar://12238782 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164089 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18 01:42:45 +00:00
; CHECK: vld1.64
Fix crash introduced in 116852. 8573915. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116955 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:03:37 +00:00
}
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