| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -instcombine -S < %s | FileCheck %s |
| |
| ; Test that presence of range does not cause unprofitable transforms with bit |
| ; arithmetics. |
| |
| define i1 @without_range(i32* %A) { |
| ; CHECK-LABEL: @without_range( |
| ; CHECK-NEXT: [[A_VAL:%.*]] = load i32, i32* [[A:%.*]], align 8 |
| ; CHECK-NEXT: [[C:%.*]] = icmp slt i32 [[A_VAL]], 2 |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A.val = load i32, i32* %A, align 8 |
| %B = sdiv i32 %A.val, 2 |
| %C = icmp sge i32 0, %B |
| ret i1 %C |
| } |
| |
| define i1 @with_range(i32* %A) { |
| ; CHECK-LABEL: @with_range( |
| ; CHECK-NEXT: [[A_VAL:%.*]] = load i32, i32* [[A:%.*]], align 8, !range [[RNG0:![0-9]+]] |
| ; CHECK-NEXT: [[C:%.*]] = icmp ult i32 [[A_VAL]], 2 |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A.val = load i32, i32* %A, align 8, !range !0 |
| %B = sdiv i32 %A.val, 2 |
| %C = icmp sge i32 0, %B |
| ret i1 %C |
| } |
| |
| !0 = !{i32 0, i32 2147483647} |