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