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| author | Chad Rosier <mcrosier@apple.com> | 2011-12-22 02:40:57 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-12-22 02:40:57 +0000 |
| commit | 5ddb7a0105a71faf86bed587b1682a3add99e551 (patch) | |
| tree | 741d7d0f7642dde3c6c61487b859143640629ea3 /test/Transforms/LoopUnswitch/2011-11-18-SimpleSwitch.ll | |
| parent | 4982159b885f1db4cc29b1695841121db85a64a1 (diff) | |
Speculatively revert r146578 to determine if it is the cause of a number of
performance regressions (both execution-time and compile-time) on our
nightly testers.
Original commit message:
Fix for bug #11429: Wrong behaviour for switches. Small improvement for code
size heuristics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147131 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopUnswitch/2011-11-18-SimpleSwitch.ll')
| -rw-r--r-- | test/Transforms/LoopUnswitch/2011-11-18-SimpleSwitch.ll | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/test/Transforms/LoopUnswitch/2011-11-18-SimpleSwitch.ll b/test/Transforms/LoopUnswitch/2011-11-18-SimpleSwitch.ll deleted file mode 100644 index 8389fe4643..0000000000 --- a/test/Transforms/LoopUnswitch/2011-11-18-SimpleSwitch.ll +++ /dev/null @@ -1,91 +0,0 @@ -; RUN: opt -loop-unswitch -disable-output -stats -info-output-file - < %s | FileCheck --check-prefix=STATS %s -; RUN: opt -S -loop-unswitch -verify-loop-info -verify-dom-info %s | FileCheck %s - -; STATS: 1 loop-simplify - Number of pre-header or exit blocks inserted -; STATS: 2 loop-unswitch - Number of switches unswitched - -; CHECK: %1 = icmp eq i32 %c, 1 -; CHECK-NEXT: br i1 %1, label %.split.us, label %..split_crit_edge - -; CHECK: ..split_crit_edge: ; preds = %0 -; CHECK-NEXT: br label %.split - -; CHECK: .split.us: ; preds = %0 -; CHECK-NEXT: br label %loop_begin.us - -; CHECK: loop_begin.us: ; preds = %loop_begin.backedge.us, %.split.us -; CHECK-NEXT: %var_val.us = load i32* %var -; CHECK-NEXT: switch i32 1, label %default.us-lcssa.us [ -; CHECK-NEXT: i32 1, label %inc.us - -; CHECK: inc.us: ; preds = %loop_begin.us -; CHECK-NEXT: call void @incf() noreturn nounwind -; CHECK-NEXT: br label %loop_begin.backedge.us - -; CHECK: .split: ; preds = %..split_crit_edge -; CHECK-NEXT: %2 = icmp eq i32 %c, 2 -; CHECK-NEXT: br i1 %2, label %.split.split.us, label %.split..split.split_crit_edge - -; CHECK: .split..split.split_crit_edge: ; preds = %.split -; CHECK-NEXT: br label %.split.split - -; CHECK: .split.split.us: ; preds = %.split -; CHECK-NEXT: br label %loop_begin.us1 - -; CHECK: loop_begin.us1: ; preds = %loop_begin.backedge.us5, %.split.split.us -; CHECK-NEXT: %var_val.us2 = load i32* %var -; CHECK-NEXT: switch i32 2, label %default.us-lcssa.us-lcssa.us [ -; CHECK-NEXT: i32 1, label %inc.us3 -; CHECK-NEXT: i32 2, label %dec.us4 -; CHECK-NEXT: ] - -; CHECK: dec.us4: ; preds = %loop_begin.us1 -; CHECK-NEXT: call void @decf() noreturn nounwind -; CHECK-NEXT: br label %loop_begin.backedge.us5 - -; CHECK: .split.split: ; preds = %.split..split.split_crit_edge -; CHECK-NEXT: br label %loop_begin - -; CHECK: loop_begin: ; preds = %loop_begin.backedge, %.split.split -; CHECK-NEXT: %var_val = load i32* %var -; CHECK-NEXT: switch i32 %c, label %default.us-lcssa.us-lcssa [ -; CHECK-NEXT: i32 1, label %inc -; CHECK-NEXT: i32 2, label %dec -; CHECK-NEXT: ] - -; CHECK: inc: ; preds = %loop_begin -; CHECK-NEXT: br i1 true, label %us-unreachable.us-lcssa, label %inc.split - -; CHECK: dec: ; preds = %loop_begin -; CHECK-NEXT: br i1 true, label %us-unreachable6, label %dec.split - -define i32 @test(i32* %var) { - %mem = alloca i32 - store i32 2, i32* %mem - %c = load i32* %mem - - br label %loop_begin - -loop_begin: - - %var_val = load i32* %var - - switch i32 %c, label %default [ - i32 1, label %inc - i32 2, label %dec - ] - -inc: - call void @incf() noreturn nounwind - br label %loop_begin -dec: - call void @decf() noreturn nounwind - br label %loop_begin -default: - br label %loop_exit -loop_exit: - ret i32 0 -} - -declare void @incf() noreturn -declare void @decf() noreturn |