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llvm/test/CodeGen/ARM/2011-04-07-schediv.ll

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Added a check in the preRA scheduler for potential interference on a induction variable. The preRA scheduler is unaware of induction vars, so we look for potential "virtual register cycles" instead. Fixes <rdar://problem/8946719> Bad scheduling prevents coalescing git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129100 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07 19:54:57 +00:00
; RUN: llc < %s -mcpu=cortex-a8 | FileCheck %s
; Tests preRAsched support for VRegCycle interference.
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32"
target triple = "thumbv7-apple-darwin10"
define void @t(i32 %src_width, float* nocapture %src_copy_start, float* nocapture %dst_copy_start, i32 %src_copy_start_index) nounwind optsize {
entry:
%src_copy_start6 = bitcast float* %src_copy_start to i8*
%0 = icmp eq i32 %src_width, 0
br i1 %0, label %return, label %bb
; Make sure the scheduler schedules all uses of the preincrement
; induction variable before defining the postincrement value.
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: t:
Fix a bunch of ARM tests to be register allocation independent. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130800 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03 22:31:21 +00:00
; CHECK: %bb
Added a check in the preRA scheduler for potential interference on a induction variable. The preRA scheduler is unaware of induction vars, so we look for potential "virtual register cycles" instead. Fixes <rdar://problem/8946719> Bad scheduling prevents coalescing git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129100 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07 19:54:57 +00:00
; CHECK-NOT: mov
bb: ; preds = %entry, %bb
%j.05 = phi i32 [ %2, %bb ], [ 0, %entry ]
%tmp = mul i32 %j.05, %src_copy_start_index
%uglygep = getelementptr i8* %src_copy_start6, i32 %tmp
%src_copy_start_addr.04 = bitcast i8* %uglygep to float*
%dst_copy_start_addr.03 = getelementptr float* %dst_copy_start, i32 %j.05
%1 = load float* %src_copy_start_addr.04, align 4
store float %1, float* %dst_copy_start_addr.03, align 4
%2 = add i32 %j.05, 1
%exitcond = icmp eq i32 %2, %src_width
br i1 %exitcond, label %return, label %bb
return: ; preds = %bb, %entry
ret void
}
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