| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -mtriple i686-unknown-unknown -codegenprepare -S | FileCheck %s |
| |
| target datalayout = "e-p:8:8" |
| |
| ; The shl has UB (shift count oob). This used to result in undefined behavior |
| ; in codegenprepare when AddressingModeMatcher::matchOperationAddr tried to |
| ; shift a variable by that amount during compilation. Intent with the test |
| ; case is to verify that this compiles without complaints even if opt is built |
| ; with ubsan enabled. |
| define dso_local void @main(i32 %a, ptr %p) { |
| ; CHECK-LABEL: @main( |
| ; CHECK-NEXT: [[SHL:%.*]] = shl i32 [[A:%.*]], -1229216766 |
| ; CHECK-NEXT: [[ARRAYIDX926:%.*]] = getelementptr inbounds [3 x ptr], ptr [[P:%.*]], i32 0, i32 [[SHL]] |
| ; CHECK-NEXT: [[L0:%.*]] = load ptr, ptr [[ARRAYIDX926]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| %shl = shl i32 %a, -1229216766 |
| %arrayidx926 = getelementptr inbounds [3 x ptr], ptr %p, i32 0, i32 %shl |
| %l0 = load ptr, ptr %arrayidx926, align 1 |
| ret void |
| } |
