diff options
Diffstat (limited to 'llvm/test/Transforms/LoopStrengthReduce/illegal-addr-modes.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopStrengthReduce/illegal-addr-modes.ll | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/llvm/test/Transforms/LoopStrengthReduce/illegal-addr-modes.ll b/llvm/test/Transforms/LoopStrengthReduce/illegal-addr-modes.ll deleted file mode 100644 index cb17d587961..00000000000 --- a/llvm/test/Transforms/LoopStrengthReduce/illegal-addr-modes.ll +++ /dev/null @@ -1,122 +0,0 @@ -; RUN: opt < %s -loop-reduce -S | FileCheck %s - -target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" -target triple = "thumbv6m-arm-none-eabi" - -; These are regression tests for -; https://bugs.llvm.org/show_bug.cgi?id=34106 -; "ARMTargetLowering::isLegalAddressingMode can accept incorrect -; addressing modes for Thumb1 target" -; https://reviews.llvm.org/D34583 -; "[LSR] Narrow search space by filtering non-optimal formulae with the -; same ScaledReg and Scale." -; -; Due to a bug in ARMTargetLowering::isLegalAddressingMode LSR got -; 4*reg({0,+,-1}) and -4*reg({0,+,-1}) had the same cost for the Thumb1 target. -; Another issue was that LSR got that -1*reg was free for the Thumb1 target. - -; Test case 01: -1*reg is not free for the Thumb1 target. -; -; CHECK-LABEL: @negativeOneCase -; CHECK-NOT: mul -; CHECK: ret i8 -define i8* @negativeOneCase(i8* returned %a, i8* nocapture readonly %b, i32 %n) nounwind { -entry: - %add.ptr = getelementptr inbounds i8, i8* %a, i32 -1 - br label %while.cond - -while.cond: ; preds = %while.cond, %entry - %p.0 = phi i8* [ %add.ptr, %entry ], [ %incdec.ptr, %while.cond ] - %incdec.ptr = getelementptr inbounds i8, i8* %p.0, i32 1 - %0 = load i8, i8* %incdec.ptr, align 1 - %cmp = icmp eq i8 %0, 0 - br i1 %cmp, label %while.cond2.preheader, label %while.cond - -while.cond2.preheader: ; preds = %while.cond - br label %while.cond2 - -while.cond2: ; preds = %while.cond2.preheader, %while.body5 - %b.addr.0 = phi i8* [ %incdec.ptr6, %while.body5 ], [ %b, %while.cond2.preheader ] - %n.addr.0 = phi i32 [ %dec, %while.body5 ], [ %n, %while.cond2.preheader ] - %p.1 = phi i8* [ %incdec.ptr7, %while.body5 ], [ %incdec.ptr, %while.cond2.preheader ] - %cmp3 = icmp eq i32 %n.addr.0, 0 - br i1 %cmp3, label %while.end8, label %while.body5 - -while.body5: ; preds = %while.cond2 - %dec = add i32 %n.addr.0, -1 - %incdec.ptr6 = getelementptr inbounds i8, i8* %b.addr.0, i32 1 - %1 = load i8, i8* %b.addr.0, align 1 - %incdec.ptr7 = getelementptr inbounds i8, i8* %p.1, i32 1 - store i8 %1, i8* %p.1, align 1 - br label %while.cond2 - -while.end8: ; preds = %while.cond2 - %scevgep = getelementptr i8, i8* %incdec.ptr, i32 %n - store i8 0, i8* %scevgep, align 1 - ret i8* %a -} - -; Test case 02: 4*reg({0,+,-1}) and -4*reg({0,+,-1}) are not supported for -; the Thumb1 target. -; -; CHECK-LABEL: @negativeFourCase -; CHECK-NOT: mul -; CHECK: ret void -define void @negativeFourCase(i8* %ptr1, i32* %ptr2) nounwind { -entry: - br label %for.cond6.preheader.us.i.i - -for.cond6.preheader.us.i.i: ; preds = %if.end48.us.i.i, %entry - %addr.0108.us.i.i = phi i8* [ %scevgep.i.i, %if.end48.us.i.i ], [ %ptr1, %entry ] - %inc49.us.i.i = phi i32 [ %inc50.us.i.i, %if.end48.us.i.i ], [ 0, %entry ] - %c1.0104.us.i.i = phi i32* [ %c0.0103.us.i.i, %if.end48.us.i.i ], [ %ptr2, %entry ] - %c0.0103.us.i.i = phi i32* [ %c1.0104.us.i.i, %if.end48.us.i.i ], [ %ptr2, %entry ] - br label %for.body8.us.i.i - -if.end48.us.i.i: ; preds = %for.inc.us.i.i - %scevgep.i.i = getelementptr i8, i8* %addr.0108.us.i.i, i32 256 - %inc50.us.i.i = add nuw nsw i32 %inc49.us.i.i, 1 - %exitcond110.i.i = icmp eq i32 %inc50.us.i.i, 256 - br i1 %exitcond110.i.i, label %exit.i, label %for.cond6.preheader.us.i.i - -for.body8.us.i.i: ; preds = %for.inc.us.i.i, %for.cond6.preheader.us.i.i - %addr.198.us.i.i = phi i8* [ %addr.0108.us.i.i, %for.cond6.preheader.us.i.i ], [ %incdec.ptr.us.i.i, %for.inc.us.i.i ] - %inc.196.us.i.i = phi i32 [ 0, %for.cond6.preheader.us.i.i ], [ %inc.2.us.i.i, %for.inc.us.i.i ] - %c.093.us.i.i = phi i32 [ 0, %for.cond6.preheader.us.i.i ], [ %inc43.us.i.i, %for.inc.us.i.i ] - %incdec.ptr.us.i.i = getelementptr inbounds i8, i8* %addr.198.us.i.i, i32 1 - %0 = load i8, i8* %addr.198.us.i.i, align 1 - %cmp9.us.i.i = icmp eq i8 %0, -1 - br i1 %cmp9.us.i.i, label %if.end37.us.i.i, label %if.else.us.i.i - -if.else.us.i.i: ; preds = %for.body8.us.i.i - %add12.us.i.i = add nuw nsw i32 %c.093.us.i.i, 1 - %arrayidx13.us.i.i = getelementptr inbounds i32, i32* %c1.0104.us.i.i, i32 %add12.us.i.i - %1 = load i32, i32* %arrayidx13.us.i.i, align 4 - %arrayidx16.us.i.i = getelementptr inbounds i32, i32* %c1.0104.us.i.i, i32 %c.093.us.i.i - %2 = load i32, i32* %arrayidx16.us.i.i, align 4 - %sub19.us.i.i = add nsw i32 %c.093.us.i.i, -1 - %arrayidx20.us.i.i = getelementptr inbounds i32, i32* %c1.0104.us.i.i, i32 %sub19.us.i.i - %3 = load i32, i32* %arrayidx20.us.i.i, align 4 - br label %if.end37.us.i.i - -if.end37.us.i.i: ; preds = %if.else.us.i.i, %for.body8.us.i.i - %4 = phi i32 [ %3, %if.else.us.i.i ], [ 0, %for.body8.us.i.i ] - %arrayidx36.us.i.i = getelementptr inbounds i32, i32* %c0.0103.us.i.i, i32 %c.093.us.i.i - store i32 %4, i32* %arrayidx36.us.i.i, align 4 - %inc.us.i.i = add nsw i32 %inc.196.us.i.i, 1 - %cmp38.us.i.i = icmp sgt i32 %inc.196.us.i.i, 6 - br i1 %cmp38.us.i.i, label %if.then40.us.i.i, label %for.inc.us.i.i - -if.then40.us.i.i: ; preds = %if.end37.us.i.i - br label %for.inc.us.i.i - -for.inc.us.i.i: ; preds = %if.then40.us.i.i, %if.end37.us.i.i - %inc.2.us.i.i = phi i32 [ 0, %if.then40.us.i.i ], [ %inc.us.i.i, %if.end37.us.i.i ] - %inc43.us.i.i = add nuw nsw i32 %c.093.us.i.i, 1 - %exitcond.i.i = icmp eq i32 %inc43.us.i.i, 256 - br i1 %exitcond.i.i, label %if.end48.us.i.i, label %for.body8.us.i.i - -exit.i: ; preds = %if.end48.us.i.i - ret void -} - |
