forked from OSchip/llvm-project
226 lines
6.2 KiB
LLVM
226 lines
6.2 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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define i1 @test1(i16 %tmp2) {
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; CHECK-LABEL: @test1
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; CHECK-NEXT: %tmp = icmp eq i16 %tmp2, 256
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; CHECK-NEXT: ret i1 %tmp
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%tmp10 = call i16 @llvm.bswap.i16( i16 %tmp2 )
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%tmp = icmp eq i16 %tmp10, 1
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ret i1 %tmp
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}
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define i1 @test2(i32 %tmp) {
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; CHECK-LABEL: @test2
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; CHECK-NEXT: %tmp.upgrd.1 = icmp eq i32 %tmp, 16777216
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; CHECK-NEXT: ret i1 %tmp.upgrd.1
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%tmp34 = tail call i32 @llvm.bswap.i32( i32 %tmp )
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%tmp.upgrd.1 = icmp eq i32 %tmp34, 1
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ret i1 %tmp.upgrd.1
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}
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define i1 @test3(i64 %tmp) {
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; CHECK-LABEL: @test3
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; CHECK-NEXT: %tmp.upgrd.2 = icmp eq i64 %tmp, 72057594037927936
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; CHECK-NEXT: ret i1 %tmp.upgrd.2
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%tmp34 = tail call i64 @llvm.bswap.i64( i64 %tmp )
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%tmp.upgrd.2 = icmp eq i64 %tmp34, 1
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ret i1 %tmp.upgrd.2
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}
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; rdar://5992453
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; A & 255
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define i32 @test4(i32 %a) nounwind {
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; CHECK-LABEL: @test4
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; CHECK-NEXT: %tmp2 = and i32 %a, 255
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; CHECK-NEXT: ret i32 %tmp2
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%tmp2 = tail call i32 @llvm.bswap.i32( i32 %a )
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%tmp4 = lshr i32 %tmp2, 24
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ret i32 %tmp4
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}
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; A
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define i32 @test5(i32 %a) nounwind {
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; CHECK-LABEL: @test5
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; CHECK-NEXT: ret i32 %a
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%tmp2 = tail call i32 @llvm.bswap.i32( i32 %a )
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%tmp4 = tail call i32 @llvm.bswap.i32( i32 %tmp2 )
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ret i32 %tmp4
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}
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; a >> 24
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define i32 @test6(i32 %a) nounwind {
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; CHECK-LABEL: @test6
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; CHECK-NEXT: %tmp2 = lshr i32 %a, 24
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; CHECK-NEXT: ret i32 %tmp2
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%tmp2 = tail call i32 @llvm.bswap.i32( i32 %a )
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%tmp4 = and i32 %tmp2, 255
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ret i32 %tmp4
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}
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; PR5284
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define i16 @test7(i32 %A) {
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; CHECK-LABEL: @test7
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; CHECK-NEXT: %1 = lshr i32 %A, 16
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; CHECK-NEXT: %D = trunc i32 %1 to i16
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; CHECK-NEXT: ret i16 %D
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%B = tail call i32 @llvm.bswap.i32(i32 %A) nounwind
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%C = trunc i32 %B to i16
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%D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind
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ret i16 %D
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}
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define i16 @test8(i64 %A) {
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; CHECK-LABEL: @test8
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; CHECK-NEXT: %1 = lshr i64 %A, 48
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; CHECK-NEXT: %D = trunc i64 %1 to i16
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; CHECK-NEXT: ret i16 %D
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%B = tail call i64 @llvm.bswap.i64(i64 %A) nounwind
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%C = trunc i64 %B to i16
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%D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind
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ret i16 %D
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}
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; Misc: Fold bswap(undef) to undef.
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define i64 @foo() {
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; CHECK-LABEL: @foo
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; CHECK-NEXT: ret i64 undef
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%a = call i64 @llvm.bswap.i64(i64 undef)
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ret i64 %a
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}
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; PR15782
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; Fold: OP( BSWAP(x), BSWAP(y) ) -> BSWAP( OP(x, y) )
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; Fold: OP( BSWAP(x), CONSTANT ) -> BSWAP( OP(x, BSWAP(CONSTANT) ) )
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define i16 @bs_and16i(i16 %a, i16 %b) #0 {
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; CHECK-LABEL: @bs_and16i
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; CHECK-NEXT: %1 = and i16 %a, 4391
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; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
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; CHECK-NEXT: ret i16 %2
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%1 = tail call i16 @llvm.bswap.i16(i16 %a)
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%2 = and i16 %1, 10001
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ret i16 %2
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}
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define i16 @bs_and16(i16 %a, i16 %b) #0 {
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; CHECK-LABEL: @bs_and16
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; CHECK-NEXT: %1 = and i16 %a, %b
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; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
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; CHECK-NEXT: ret i16 %2
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%tmp1 = tail call i16 @llvm.bswap.i16(i16 %a)
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%tmp2 = tail call i16 @llvm.bswap.i16(i16 %b)
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%tmp3 = and i16 %tmp1, %tmp2
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ret i16 %tmp3
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}
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define i16 @bs_or16(i16 %a, i16 %b) #0 {
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; CHECK-LABEL: @bs_or16
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; CHECK-NEXT: %1 = or i16 %a, %b
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; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
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; CHECK-NEXT: ret i16 %2
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%tmp1 = tail call i16 @llvm.bswap.i16(i16 %a)
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%tmp2 = tail call i16 @llvm.bswap.i16(i16 %b)
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%tmp3 = or i16 %tmp1, %tmp2
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ret i16 %tmp3
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}
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define i16 @bs_xor16(i16 %a, i16 %b) #0 {
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; CHECK-LABEL: @bs_xor16
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; CHECK-NEXT: %1 = xor i16 %a, %b
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; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
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; CHECK-NEXT: ret i16 %2
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%tmp1 = tail call i16 @llvm.bswap.i16(i16 %a)
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%tmp2 = tail call i16 @llvm.bswap.i16(i16 %b)
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%tmp3 = xor i16 %tmp1, %tmp2
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ret i16 %tmp3
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}
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define i32 @bs_and32i(i32 %a, i32 %b) #0 {
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; CHECK-LABEL: @bs_and32i
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; CHECK-NEXT: %1 = and i32 %a, -1585053440
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; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
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; CHECK-NEXT: ret i32 %2
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%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
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%tmp2 = and i32 %tmp1, 100001
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ret i32 %tmp2
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}
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define i32 @bs_and32(i32 %a, i32 %b) #0 {
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; CHECK-LABEL: @bs_and32
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; CHECK-NEXT: %1 = and i32 %a, %b
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; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
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; CHECK-NEXT: ret i32 %2
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%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
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%tmp2 = tail call i32 @llvm.bswap.i32(i32 %b)
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%tmp3 = and i32 %tmp1, %tmp2
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ret i32 %tmp3
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}
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define i32 @bs_or32(i32 %a, i32 %b) #0 {
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; CHECK-LABEL: @bs_or32
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; CHECK-NEXT: %1 = or i32 %a, %b
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; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
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; CHECK-NEXT: ret i32 %2
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%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
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%tmp2 = tail call i32 @llvm.bswap.i32(i32 %b)
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%tmp3 = or i32 %tmp1, %tmp2
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ret i32 %tmp3
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}
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define i32 @bs_xor32(i32 %a, i32 %b) #0 {
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; CHECK-LABEL: @bs_xor32
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; CHECK-NEXT: %1 = xor i32 %a, %b
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; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
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; CHECK-NEXT: ret i32 %2
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%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
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%tmp2 = tail call i32 @llvm.bswap.i32(i32 %b)
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%tmp3 = xor i32 %tmp1, %tmp2
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ret i32 %tmp3
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}
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define i64 @bs_and64i(i64 %a, i64 %b) #0 {
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; CHECK-LABEL: @bs_and64i
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; CHECK-NEXT: %1 = and i64 %a, 129085117527228416
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; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
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; CHECK-NEXT: ret i64 %2
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%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
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%tmp2 = and i64 %tmp1, 1000000001
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ret i64 %tmp2
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}
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define i64 @bs_and64(i64 %a, i64 %b) #0 {
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; CHECK-LABEL: @bs_and64
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; CHECK-NEXT: %1 = and i64 %a, %b
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; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
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; CHECK-NEXT: ret i64 %2
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%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
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%tmp2 = tail call i64 @llvm.bswap.i64(i64 %b)
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%tmp3 = and i64 %tmp1, %tmp2
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ret i64 %tmp3
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}
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define i64 @bs_or64(i64 %a, i64 %b) #0 {
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; CHECK-LABEL: @bs_or64
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; CHECK-NEXT: %1 = or i64 %a, %b
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; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
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; CHECK-NEXT: ret i64 %2
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%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
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%tmp2 = tail call i64 @llvm.bswap.i64(i64 %b)
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%tmp3 = or i64 %tmp1, %tmp2
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ret i64 %tmp3
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}
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define i64 @bs_xor64(i64 %a, i64 %b) #0 {
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; CHECK-LABEL: @bs_xor64
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; CHECK-NEXT: %1 = xor i64 %a, %b
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; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
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; CHECK-NEXT: ret i64 %2
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%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
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%tmp2 = tail call i64 @llvm.bswap.i64(i64 %b)
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%tmp3 = xor i64 %tmp1, %tmp2
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ret i64 %tmp3
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}
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declare i16 @llvm.bswap.i16(i16)
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declare i32 @llvm.bswap.i32(i32)
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declare i64 @llvm.bswap.i64(i64)
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