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918871ee01
(eliminating some extends) if the new type of the computation is legal or if both the source and dest are illegal. This prevents instcombine from changing big chains of computation into i64 on 32-bit targets for example. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86398 91177308-0d34-0410-b5e6-96231b3b80d8
22 lines
616 B
LLVM
22 lines
616 B
LLVM
; RUN: opt < %s -instcombine -S | not grep zext
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; PR4548
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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"
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define i8 @udiv_i8(i8 %a, i8 %b) nounwind {
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%conv = zext i8 %a to i32
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%conv2 = zext i8 %b to i32
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%div = udiv i32 %conv, %conv2
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%conv3 = trunc i32 %div to i8
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ret i8 %conv3
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}
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define i8 @urem_i8(i8 %a, i8 %b) nounwind {
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%conv = zext i8 %a to i32
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%conv2 = zext i8 %b to i32
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%div = urem i32 %conv, %conv2
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%conv3 = trunc i32 %div to i8
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ret i8 %conv3
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}
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