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12 lines
374 B
LLVM
12 lines
374 B
LLVM
; Tests to make sure elimination of casts is working correctly
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i64 @test_sext_zext(i16 %A) {
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%c1 = zext i16 %A to i32 ; <i32> [#uses=1]
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%c2 = sext i32 %c1 to i64 ; <i64> [#uses=1]
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ret i64 %c2
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; CHECK-NOT: %c1
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; CHECK: %c2 = zext i16 %A to i64
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; CHECK: ret i64 %c2
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}
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