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llvm-6502/test/CodeGen/ARM/machine-cse-cmp.ll

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Allow machine-cse to look across MBB boundary when cse'ing instructions that define physical registers. It's currently very restrictive, only catching cases where the CE is in an immediate (and only) predecessor. But it catches a surprising large number of cases. rdar://10660865 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147827 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-10 02:02:58 +00:00
; RUN: llc < %s -mtriple=armv7-apple-ios | FileCheck %s
Re-apply 105308 with fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105502 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04 23:28:13 +00:00
;rdar://8003725
@G1 = external global i32
@G2 = external global i32
define i32 @f1(i32 %cond1, i32 %x1, i32 %x2, i32 %x3) {
entry:
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 $NAME fi done git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-14 06:24:09 +00:00
; CHECK-LABEL: f1:
Re-apply 105308 with fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105502 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04 23:28:13 +00:00
; CHECK: cmp
; CHECK: moveq
; CHECK-NOT: cmp
Implement ARMBaseInstrInfo::commuteInstruction() for MOVCCr. A MOVCCr instruction can be commuted by inverting the condition. This can help reduce register pressure and remove unnecessary copies in some cases. <rdar://problem/11182914> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154033 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04 18:23:42 +00:00
; CHECK: mov{{eq|ne}}
Re-apply 105308 with fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105502 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04 23:28:13 +00:00
%tmp1 = icmp eq i32 %cond1, 0
%tmp2 = select i1 %tmp1, i32 %x1, i32 %x2
%tmp3 = select i1 %tmp1, i32 %x2, i32 %x3
%tmp4 = add i32 %tmp2, %tmp3
ret i32 %tmp4
}
Allow machine-cse to look across MBB boundary when cse'ing instructions that define physical registers. It's currently very restrictive, only catching cases where the CE is in an immediate (and only) predecessor. But it catches a surprising large number of cases. rdar://10660865 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147827 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-10 02:02:58 +00:00
@foo = external global i32
@bar = external global [250 x i8], align 1
; CSE of cmp across BB boundary
; rdar://10660865
define void @f2() nounwind ssp {
entry:
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-14 06:24:09 +00:00
; CHECK-LABEL: f2:
Allow machine-cse to look across MBB boundary when cse'ing instructions that define physical registers. It's currently very restrictive, only catching cases where the CE is in an immediate (and only) predecessor. But it catches a surprising large number of cases. rdar://10660865 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147827 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-10 02:02:58 +00:00
; CHECK: cmp
; CHECK: poplt
; CHECK-NOT: cmp
; CHECK: movle
%0 = load i32* @foo, align 4
%cmp28 = icmp sgt i32 %0, 0
br i1 %cmp28, label %for.body.lr.ph, label %for.cond1.preheader
for.body.lr.ph: ; preds = %entry
%1 = icmp sgt i32 %0, 1
%smax = select i1 %1, i32 %0, i32 1
call void @llvm.memset.p0i8.i32(i8* getelementptr inbounds ([250 x i8]* @bar, i32 0, i32 0), i8 0, i32 %smax, i32 1, i1 false)
unreachable
for.cond1.preheader: ; preds = %entry
ret void
}
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind
CSE: allow PerformTrivialCoalescing to check copies across basic block boundaries. Given the following case: BB0 %vreg1<def> = SUBrr %vreg0, %vreg7 %vreg2<def> = COPY %vreg7 BB1 %vreg10<def> = SUBrr %vreg0, %vreg2 We should be able to CSE between SUBrr in BB0 and SUBrr in BB1. rdar://12462006 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168717 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-27 18:58:41 +00:00
; rdar://12462006
define i8* @f3(i8* %base, i32* nocapture %offset, i32 %size) nounwind {
entry:
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$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: f3:
CSE: allow PerformTrivialCoalescing to check copies across basic block boundaries. Given the following case: BB0 %vreg1<def> = SUBrr %vreg0, %vreg7 %vreg2<def> = COPY %vreg7 BB1 %vreg10<def> = SUBrr %vreg0, %vreg2 We should be able to CSE between SUBrr in BB0 and SUBrr in BB1. rdar://12462006 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168717 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-27 18:58:41 +00:00
; CHECK-NOT: sub
; CHECK: cmp
; CHECK: blt
%0 = load i32* %offset, align 4
%cmp = icmp slt i32 %0, %size
%s = sub nsw i32 %0, %size
%size2 = sub nsw i32 %size, 0
br i1 %cmp, label %return, label %if.end
if.end:
; We are checking cse between %sub here and %s in entry block.
%sub = sub nsw i32 %0, %size2
%s2 = sub nsw i32 %s, %size
%s3 = sub nsw i32 %sub, %s2
; CHECK: sub [[R1:r[0-9]+]], [[R2:r[0-9]+]], r2
; CHECK: sub [[R3:r[0-9]+]], [[R1]], r2
; CHECK: sub [[R4:r[0-9]+]], [[R1]], [[R3]]
; CHECK-NOT: sub
; CHECK: str
store i32 %s3, i32* %offset, align 4
%add.ptr = getelementptr inbounds i8* %base, i32 %sub
br label %return
return:
%retval.0 = phi i8* [ %add.ptr, %if.end ], [ null, %entry ]
ret i8* %retval.0
}
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