diff options
Diffstat (limited to 'test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.ll')
| -rw-r--r-- | test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.ll | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.ll b/test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.ll index af9f1b3..64fef10 100644 --- a/test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.ll +++ b/test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.ll @@ -1,6 +1,6 @@ ; RUN: opt < %s -indvars -S | FileCheck %s ; Test WidenIV::GetExtendedOperandRecurrence. -; add219 should be extended to i64 because it is nsw, even though its +; %add, %sub and %mul should be extended to i64 because it is nsw, even though its ; sext cannot be hoisted outside the loop. target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" @@ -18,13 +18,26 @@ for.body153: ; preds = %for.body153, %for.b br i1 undef, label %for.body170, label %for.body153 ; CHECK: add nsw i64 %indvars.iv, 1 +; CHECK: sub nsw i64 %indvars.iv, 2 +; CHECK: sub nsw i64 4, %indvars.iv +; CHECK: mul nsw i64 %indvars.iv, 8 for.body170: ; preds = %for.body170, %for.body153 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ] - %add219 = add nsw i32 %i2.19, 1 - %idxprom220 = sext i32 %add219 to i64 + + %add = add nsw i32 %i2.19, 1 + %add.idxprom = sext i32 %add to i64 + + %sub = sub nsw i32 %i2.19, 2 + %sub.idxprom = sext i32 %sub to i64 + + %sub.neg = sub nsw i32 4, %i2.19 + %sub.neg.idxprom = sext i32 %sub.neg to i64 + + %mul = mul nsw i32 %i2.19, 8 + %mul.idxprom = sext i32 %mul to i64 + %add249 = add nsw i32 %i2.19, %shl132 br label %for.body170 - for.end285: ; preds = %entry ret void } |