| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 |
| ; RUN: llc < %s -mtriple=riscv64 | FileCheck %s --check-prefixes=CHECK-NOZBB |
| ; RUN: llc < %s -mtriple=riscv64 -mattr=+zbb | FileCheck %s --check-prefixes=CHECK-ZBB |
| |
| ; This test case miscompiled for ZBB (DAGCombiner turned a SELECT into a more |
| ; poisonous AND operation). |
| define i1 @pr84653(i32 %x) { |
| ; CHECK-NOZBB-LABEL: pr84653: |
| ; CHECK-NOZBB: # %bb.0: |
| ; CHECK-NOZBB-NEXT: sext.w a1, a0 |
| ; CHECK-NOZBB-NEXT: sgtz a2, a1 |
| ; CHECK-NOZBB-NEXT: lui a3, 524288 |
| ; CHECK-NOZBB-NEXT: addi a3, a3, -1 |
| ; CHECK-NOZBB-NEXT: xor a0, a0, a3 |
| ; CHECK-NOZBB-NEXT: sext.w a0, a0 |
| ; CHECK-NOZBB-NEXT: slt a0, a0, a1 |
| ; CHECK-NOZBB-NEXT: and a0, a2, a0 |
| ; CHECK-NOZBB-NEXT: ret |
| ; |
| ; CHECK-ZBB-LABEL: pr84653: |
| ; CHECK-ZBB: # %bb.0: |
| ; CHECK-ZBB-NEXT: sext.w a1, a0 |
| ; CHECK-ZBB-NEXT: lui a2, 524288 |
| ; CHECK-ZBB-NEXT: addi a2, a2, -1 |
| ; CHECK-ZBB-NEXT: xor a0, a0, a2 |
| ; CHECK-ZBB-NEXT: sext.w a0, a0 |
| ; CHECK-ZBB-NEXT: max a0, a0, zero |
| ; CHECK-ZBB-NEXT: slt a0, a0, a1 |
| ; CHECK-ZBB-NEXT: ret |
| %cmp1 = icmp sgt i32 %x, 0 |
| %sub = sub nsw i32 2147483647, %x ; 0x7fffffff |
| %cmp2 = icmp sgt i32 %x, %sub |
| %r = select i1 %cmp1, i1 %cmp2, i1 false |
| ret i1 %r |
| } |
| |
| ; This test case miscompiled for ZBB (DAGCombiner turned a SELECT into a more |
| ; poisonous AND operation). |
| define i1 @pr85190(i64 %a) { |
| ; CHECK-NOZBB-LABEL: pr85190: |
| ; CHECK-NOZBB: # %bb.0: |
| ; CHECK-NOZBB-NEXT: ori a1, a0, 7 |
| ; CHECK-NOZBB-NEXT: slti a2, a0, 0 |
| ; CHECK-NOZBB-NEXT: li a3, -1 |
| ; CHECK-NOZBB-NEXT: slli a3, a3, 63 |
| ; CHECK-NOZBB-NEXT: sub a3, a3, a1 |
| ; CHECK-NOZBB-NEXT: slt a0, a0, a3 |
| ; CHECK-NOZBB-NEXT: and a0, a2, a0 |
| ; CHECK-NOZBB-NEXT: ret |
| ; |
| ; CHECK-ZBB-LABEL: pr85190: |
| ; CHECK-ZBB: # %bb.0: |
| ; CHECK-ZBB-NEXT: ori a1, a0, 7 |
| ; CHECK-ZBB-NEXT: li a2, -1 |
| ; CHECK-ZBB-NEXT: slli a2, a2, 63 |
| ; CHECK-ZBB-NEXT: sub a2, a2, a1 |
| ; CHECK-ZBB-NEXT: slt a0, a0, a2 |
| ; CHECK-ZBB-NEXT: ret |
| %or = or i64 %a, 7 |
| %cmp1 = icmp slt i64 %a, 0 |
| %sub = sub nsw i64 -9223372036854775808, %or ; 0x8000000000000000 |
| %cmp2 = icmp sgt i64 %sub, %a |
| %res = select i1 %cmp1, i1 %cmp2, i1 false |
| ret i1 %res |
| } |
| |
| define i1 @select_to_or(i32 %x) { |
| ; CHECK-NOZBB-LABEL: select_to_or: |
| ; CHECK-NOZBB: # %bb.0: |
| ; CHECK-NOZBB-NEXT: sext.w a1, a0 |
| ; CHECK-NOZBB-NEXT: sgtz a2, a1 |
| ; CHECK-NOZBB-NEXT: lui a3, 524288 |
| ; CHECK-NOZBB-NEXT: addi a3, a3, -1 |
| ; CHECK-NOZBB-NEXT: xor a0, a0, a3 |
| ; CHECK-NOZBB-NEXT: sext.w a0, a0 |
| ; CHECK-NOZBB-NEXT: slt a0, a0, a1 |
| ; CHECK-NOZBB-NEXT: or a0, a2, a0 |
| ; CHECK-NOZBB-NEXT: ret |
| ; |
| ; CHECK-ZBB-LABEL: select_to_or: |
| ; CHECK-ZBB: # %bb.0: |
| ; CHECK-ZBB-NEXT: sext.w a1, a0 |
| ; CHECK-ZBB-NEXT: lui a2, 524288 |
| ; CHECK-ZBB-NEXT: addi a2, a2, -1 |
| ; CHECK-ZBB-NEXT: xor a0, a0, a2 |
| ; CHECK-ZBB-NEXT: sext.w a0, a0 |
| ; CHECK-ZBB-NEXT: min a0, a0, zero |
| ; CHECK-ZBB-NEXT: slt a0, a0, a1 |
| ; CHECK-ZBB-NEXT: ret |
| %cmp1 = icmp sgt i32 %x, 0 |
| %sub = sub nsw i32 2147483647, %x ; 0x7fffffff |
| %cmp2 = icmp sgt i32 %x, %sub |
| %r = select i1 %cmp1, i1 true, i1 %cmp2 |
| ret i1 %r |
| } |