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| author | Dale Johannesen <dalej@apple.com> | 2009-04-29 16:38:47 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2009-04-29 16:38:47 +0000 |
| commit | c9cf35055f7b0fd5814836686b4a550dc69bd11c (patch) | |
| tree | 1dace26ef1653f368491e0d4b2803acc02912531 /test | |
| parent | b27fa0afe282d74b919259fe83b2979b4f5c308b (diff) | |
| download | external_llvm-c9cf35055f7b0fd5814836686b4a550dc69bd11c.zip external_llvm-c9cf35055f7b0fd5814836686b4a550dc69bd11c.tar.gz external_llvm-c9cf35055f7b0fd5814836686b4a550dc69bd11c.tar.bz2 | |
Fix recent regression in gcc.dg/pr26719.c (6835035).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70386 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/2009-04-28-no-reduce-mul.ll | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/2009-04-28-no-reduce-mul.ll b/test/Transforms/LoopStrengthReduce/2009-04-28-no-reduce-mul.ll new file mode 100644 index 0000000..153a181 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/2009-04-28-no-reduce-mul.ll @@ -0,0 +1,43 @@ +; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | grep mul | count 3 +; The multiply in bb2 must not be reduced to an add, as the sext causes the +; %1 argument to become negative after a while. +; ModuleID = '<stdin>' +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" +target triple = "i386-apple-darwin9.6" +@table = common global [32 x [256 x i32]] zeroinitializer, align 32 ; <[32 x [256 x i32]]*> [#uses=2] + +define i32 @main() nounwind { +bb4.thread: + br label %bb2 + +bb2: ; preds = %bb4, %bb2, %bb4.thread + %i.0.reg2mem.0.ph = phi i32 [ 0, %bb4.thread ], [ %i.0.reg2mem.0.ph, %bb2 ], [ %indvar.next9, %bb4 ] ; <i32> [#uses=4] + %j.0.reg2mem.0 = phi i32 [ 0, %bb4.thread ], [ %indvar.next, %bb2 ], [ 0, %bb4 ] ; <i32> [#uses=3] + %0 = trunc i32 %j.0.reg2mem.0 to i8 ; <i8> [#uses=1] + %1 = sext i8 %0 to i32 ; <i32> [#uses=1] + %2 = mul i32 %1, %i.0.reg2mem.0.ph ; <i32> [#uses=1] + %3 = getelementptr [32 x [256 x i32]]* @table, i32 0, i32 %i.0.reg2mem.0.ph, i32 %j.0.reg2mem.0 ; <i32*> [#uses=1] + store i32 %2, i32* %3, align 4 + %indvar.next = add i32 %j.0.reg2mem.0, 1 ; <i32> [#uses=2] + %exitcond = icmp eq i32 %indvar.next, 256 ; <i1> [#uses=1] + br i1 %exitcond, label %bb4, label %bb2 + +bb4: ; preds = %bb2 + %indvar.next9 = add i32 %i.0.reg2mem.0.ph, 1 ; <i32> [#uses=2] + %exitcond10 = icmp eq i32 %indvar.next9, 32 ; <i1> [#uses=1] + br i1 %exitcond10, label %bb5, label %bb2 + +bb5: ; preds = %bb4 + %4 = load i32* getelementptr ([32 x [256 x i32]]* @table, i32 0, i32 9, i32 132), align 16 ; <i32> [#uses=1] + %5 = icmp eq i32 %4, -1116 ; <i1> [#uses=1] + br i1 %5, label %bb7, label %bb6 + +bb6: ; preds = %bb5 + tail call void @abort() noreturn nounwind + unreachable + +bb7: ; preds = %bb5 + ret i32 0 +} + +declare void @abort() noreturn nounwind |