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f2f6ce65b7
input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
39 lines
781 B
LLVM
39 lines
781 B
LLVM
; RUN: opt < %s -instcombine -S > %t
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; RUN: not grep zext %t
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; RUN: not grep sext %t
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; Instcombine should be able to eliminate all of these ext casts.
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declare void @use(i32)
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define i64 @foo(i64 %a) {
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%b = trunc i64 %a to i32
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%c = and i32 %b, 15
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%d = zext i32 %c to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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define i64 @bar(i64 %a) {
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%b = trunc i64 %a to i32
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%c = shl i32 %b, 4
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%q = ashr i32 %c, 4
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%d = sext i32 %q to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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define i64 @goo(i64 %a) {
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%b = trunc i64 %a to i32
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%c = and i32 %b, 8
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%d = zext i32 %c to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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define i64 @hoo(i64 %a) {
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%b = trunc i64 %a to i32
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%c = and i32 %b, 8
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%x = xor i32 %c, 8
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%d = zext i32 %x to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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