forked from OSchip/llvm-project
50 lines
969 B
LLVM
50 lines
969 B
LLVM
; This tests for various complex cast elimination cases instcombine should
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; handle.
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; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | notcast
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bool %test1(int %X) {
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%A = cast int %X to uint
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%c = setne uint %A, 12 ; Convert to setne int %X, 12
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ret bool %c
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}
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bool %test2(int %X, int %Y) {
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%A = cast int %X to uint
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%B = cast int %Y to uint
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%c = setne uint %A, %B ; Convert to setne int %X, %Y
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ret bool %c
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}
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int %test4(int %A) {
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%B = cast int %A to uint
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%C = shl uint %B, ubyte 2
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%D = cast uint %C to int
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ret int %D
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}
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short %test5(short %A) {
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%B = cast short %A to uint
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%C = and uint %B, 15
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%D = cast uint %C to short
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ret short %D
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}
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bool %test6(bool %A) {
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%B = cast bool %A to int
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%C = setne int %B, 0
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ret bool %C
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}
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bool %test6a(bool %A) {
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%B = cast bool %A to int
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%C = setne int %B, -1 ; Always true!
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ret bool %C
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}
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bool %test7(sbyte* %A) {
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%B = cast sbyte* %A to int*
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%C = seteq int* %B, null
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ret bool %C
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}
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