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f241174421
Getelementptrs that are defined to wrap are virtually useless to optimization, and getelementptrs that are undefined on any kind of overflow are too restrictive -- it's difficult to ensure that all intermediate addresses are within bounds. I'm going to take a different approach. Remove a few optimizations that depended on this flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76437 91177308-0d34-0410-b5e6-96231b3b80d8
25 lines
488 B
LLVM
25 lines
488 B
LLVM
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep add
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define i64 @test1(i64 %A, i32 %B) {
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%tmp12 = zext i32 %B to i64
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%tmp3 = shl i64 %tmp12, 32
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%tmp5 = add i64 %tmp3, %A
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%tmp6 = and i64 %tmp5, 123
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ret i64 %tmp6
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}
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define i32 @test3(i32 %A) {
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%B = and i32 %A, 7
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%C = and i32 %A, 32
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%F = add i32 %B, %C
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ret i32 %F
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}
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define i32 @test4(i32 %A) {
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%B = and i32 %A, 128
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%C = lshr i32 %A, 30
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%F = add i32 %B, %C
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ret i32 %F
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}
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