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https://github.com/c64scene-ar/llvm-6502.git
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dba95737e0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153255 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
1.1 KiB
LLVM
31 lines
1.1 KiB
LLVM
; RUN: opt < %s -indvars -S | FileCheck %s
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; Test WidenIV::GetExtendedOperandRecurrence.
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; add219 should be extended to i64 because it is nsw, even though its
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; sext cannot be hoisted outside the loop.
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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"
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define void @test() nounwind {
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entry:
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br i1 undef, label %for.body11, label %for.end285
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for.body11: ; preds = %entry
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%shl = shl i32 1, 1
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%shl132 = shl i32 %shl, 1
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br label %for.body153
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for.body153: ; preds = %for.body153, %for.body11
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br i1 undef, label %for.body170, label %for.body153
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; CHECK: add nsw i64 %indvars.iv, 1
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for.body170: ; preds = %for.body170, %for.body153
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%i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ]
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%add219 = add nsw i32 %i2.19, 1
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%idxprom220 = sext i32 %add219 to i64
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%add249 = add nsw i32 %i2.19, %shl132
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br label %for.body170
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for.end285: ; preds = %entry
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ret void
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}
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