1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple arm64-none-eabi -o - %s | FileCheck %s --check-prefixes=CHECK,SDISEL 3; RUN: llc -mtriple arm64-none-eabi -global-isel -o - %s | FileCheck %s --check-prefixes=CHECK,GISEL 4 5@out = internal global i32 0, align 4 6 7; Ensure that we transform select(C0, x, select(C1, x, y)) towards 8; select(C0 | C1, x, y) so we can use CMP;CCMP for the implementation. 9define i32 @test0(i32 %v0, i32 %v1, i32 %v2) { 10; SDISEL-LABEL: test0: 11; SDISEL: // %bb.0: 12; SDISEL-NEXT: cmp w0, #7 13; SDISEL-NEXT: ccmp w1, #0, #0, ne 14; SDISEL-NEXT: csel w0, w1, w2, gt 15; SDISEL-NEXT: ret 16; 17; GISEL-LABEL: test0: 18; GISEL: // %bb.0: 19; GISEL-NEXT: cmp w0, #7 20; GISEL-NEXT: csel w8, w1, w2, eq 21; GISEL-NEXT: cmp w1, #0 22; GISEL-NEXT: csel w0, w1, w8, gt 23; GISEL-NEXT: ret 24 %cmp1 = icmp eq i32 %v0, 7 25 %cmp2 = icmp sgt i32 %v1, 0 26 %sel0 = select i1 %cmp1, i32 %v1, i32 %v2 27 %sel1 = select i1 %cmp2, i32 %v1, i32 %sel0 28 ret i32 %sel1 29} 30 31; Usually we keep select(C0 | C1, x, y) as is on aarch64 to create CMP;CCMP 32; sequences. This case should be transformed to select(C0, select(C1, x, y), y) 33; anyway to get CSE effects. 34define void @test1(i32 %bitset, i32 %val0, i32 %val1) { 35; SDISEL-LABEL: test1: 36; SDISEL: // %bb.0: 37; SDISEL-NEXT: cmp w0, #7 38; SDISEL-NEXT: adrp x9, out 39; SDISEL-NEXT: csel w8, w1, w2, eq 40; SDISEL-NEXT: cmp w8, #13 41; SDISEL-NEXT: csel w8, w1, w2, lo 42; SDISEL-NEXT: cmp w0, #42 43; SDISEL-NEXT: csel w10, w1, w8, eq 44; SDISEL-NEXT: str w8, [x9, :lo12:out] 45; SDISEL-NEXT: str w10, [x9, :lo12:out] 46; SDISEL-NEXT: ret 47; 48; GISEL-LABEL: test1: 49; GISEL: // %bb.0: 50; GISEL-NEXT: cmp w0, #7 51; GISEL-NEXT: csel w8, w1, w2, eq 52; GISEL-NEXT: cmp w8, #13 53; GISEL-NEXT: cset w8, lo 54; GISEL-NEXT: tst w8, #0x1 55; GISEL-NEXT: csel w9, w1, w2, ne 56; GISEL-NEXT: cmp w0, #42 57; GISEL-NEXT: cset w10, eq 58; GISEL-NEXT: orr w8, w10, w8 59; GISEL-NEXT: tst w8, #0x1 60; GISEL-NEXT: adrp x8, out 61; GISEL-NEXT: csel w10, w1, w2, ne 62; GISEL-NEXT: str w9, [x8, :lo12:out] 63; GISEL-NEXT: str w10, [x8, :lo12:out] 64; GISEL-NEXT: ret 65 %cmp1 = icmp eq i32 %bitset, 7 66 %cond = select i1 %cmp1, i32 %val0, i32 %val1 67 %cmp5 = icmp ult i32 %cond, 13 68 %cond11 = select i1 %cmp5, i32 %val0, i32 %val1 69 %cmp3 = icmp eq i32 %bitset, 42 70 %or.cond = or i1 %cmp3, %cmp5 71 %cond17 = select i1 %or.cond, i32 %val0, i32 %val1 72 store volatile i32 %cond11, ptr @out, align 4 73 store volatile i32 %cond17, ptr @out, align 4 74 ret void 75} 76;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line: 77; CHECK: {{.*}} 78