bswap.ll
1.07 KB
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; bswap should be constant folded when it is passed a constant argument
; RUN: opt < %s -constprop -S | FileCheck %s
declare i16 @llvm.bswap.i16(i16)
declare i32 @llvm.bswap.i32(i32)
declare i64 @llvm.bswap.i64(i64)
declare i80 @llvm.bswap.i80(i80)
; CHECK-LABEL: define i16 @W(
define i16 @W() {
; CHECK: ret i16 256
%Z = call i16 @llvm.bswap.i16( i16 1 ) ; <i16> [#uses=1]
ret i16 %Z
}
; CHECK-LABEL: define i32 @X(
define i32 @X() {
; CHECK: ret i32 16777216
%Z = call i32 @llvm.bswap.i32( i32 1 ) ; <i32> [#uses=1]
ret i32 %Z
}
; CHECK-LABEL: define i64 @Y(
define i64 @Y() {
; CHECK: ret i64 72057594037927936
%Z = call i64 @llvm.bswap.i64( i64 1 ) ; <i64> [#uses=1]
ret i64 %Z
}
; CHECK-LABEL: define i80 @Z(
define i80 @Z() {
; CHECK: ret i80 -450681596205739728166896
; 0xA0908070605040302010
%Z = call i80 @llvm.bswap.i80( i80 76151636403560493650080 )
; 0x102030405060708090A0
ret i80 %Z
}