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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; Test removal of AND operations that don't affect last 6 bits of rotate amount3; operand.4;5; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s6; RUN: llc < %s -mtriple=s390x-linux-gnu -early-live-intervals | FileCheck %s7 8; Test that AND is not removed when some lower 5 bits are not set.9define i32 @f1(i32 %val, i32 %amt) {10; CHECK-LABEL: f1:11; CHECK: # %bb.0:12; CHECK-NEXT: nill %r3, 1513; CHECK-NEXT: rll %r2, %r2, 0(%r3)14; CHECK-NEXT: br %r1415 %and = and i32 %amt, 1516 17 %inv = sub i32 32, %and18 %parta = shl i32 %val, %and19 %partb = lshr i32 %val, %inv20 21 %rotl = or i32 %parta, %partb22 23 ret i32 %rotl24}25 26; Test removal of AND mask with only bottom 6 bits set.27define i32 @f2(i32 %val, i32 %amt) {28; CHECK-LABEL: f2:29; CHECK: # %bb.0:30; CHECK-NEXT: rll %r2, %r2, 0(%r3)31; CHECK-NEXT: br %r1432 %and = and i32 %amt, 6333 34 %inv = sub i32 32, %and35 %parta = shl i32 %val, %and36 %partb = lshr i32 %val, %inv37 38 %rotl = or i32 %parta, %partb39 40 ret i32 %rotl41}42 43; Test removal of AND mask including but not limited to bottom 6 bits.44define i32 @f3(i32 %val, i32 %amt) {45; CHECK-LABEL: f3:46; CHECK: # %bb.0:47; CHECK-NEXT: rll %r2, %r2, 0(%r3)48; CHECK-NEXT: br %r1449 %and = and i32 %amt, 25550 51 %inv = sub i32 32, %and52 %parta = shl i32 %val, %and53 %partb = lshr i32 %val, %inv54 55 %rotl = or i32 %parta, %partb56 57 ret i32 %rotl58}59 60; Test removal of AND mask from RLLG.61define i64 @f4(i64 %val, i64 %amt) {62; CHECK-LABEL: f4:63; CHECK: # %bb.0:64; CHECK-NEXT: rllg %r2, %r2, 0(%r3)65; CHECK-NEXT: br %r1466 %and = and i64 %amt, 6367 68 %inv = sub i64 64, %and69 %parta = shl i64 %val, %and70 %partb = lshr i64 %val, %inv71 72 %rotl = or i64 %parta, %partb73 74 ret i64 %rotl75}76 77; Test that AND is not entirely removed if the result is reused.78define i32 @f5(i32 %val, i32 %amt) {79; CHECK-LABEL: f5:80; CHECK: # %bb.0:81; CHECK-NEXT: rll %r2, %r2, 0(%r3)82; CHECK-NEXT: nilf %r3, 6383; CHECK-NEXT: ar %r2, %r384; CHECK-NEXT: br %r1485 %and = and i32 %amt, 6386 87 %inv = sub i32 32, %and88 %parta = shl i32 %val, %and89 %partb = lshr i32 %val, %inv90 91 %rotl = or i32 %parta, %partb92 93 %reuse = add i32 %and, %rotl94 ret i32 %reuse95}96