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f35fd547ac
- Looking at the number of sign bits of the a sext instruction to determine whether new trunc + sext pair should be added when its source is being evaluated in a different type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62263 91177308-0d34-0410-b5e6-96231b3b80d8
12 lines
314 B
LLVM
12 lines
314 B
LLVM
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep sext
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define zeroext i16 @t(i8 zeroext %on_off, i16* nocapture %puls) nounwind readonly {
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entry:
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%0 = zext i8 %on_off to i32
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%1 = add i32 %0, -1
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%2 = sext i32 %1 to i64
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%3 = getelementptr i16* %puls, i64 %2
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%4 = load i16* %3, align 2
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ret i16 %4
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}
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