1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -mtriple i686-unknown-unknown -codegenprepare -S | FileCheck %s
4 target datalayout = "e-p:8:8"
6 ; The shl has UB (shift count oob). This used to result in undefined behavior
7 ; in codegenprepare when AddressingModeMatcher::matchOperationAddr tried to
8 ; shift a variable by that amount during compilation. Intent with the test
9 ; case is to verify that this compiles without complaints even if opt is built
11 define dso_local void @main(i32 %a, ptr %p) {
13 ; CHECK-NEXT: [[SHL:%.*]] = shl i32 [[A:%.*]], -1229216766
14 ; CHECK-NEXT: [[ARRAYIDX926:%.*]] = getelementptr inbounds [3 x ptr], ptr [[P:%.*]], i32 0, i32 [[SHL]]
15 ; CHECK-NEXT: [[L0:%.*]] = load ptr, ptr [[ARRAYIDX926]], align 1
16 ; CHECK-NEXT: ret void
18 %shl = shl i32 %a, -1229216766
19 %arrayidx926 = getelementptr inbounds [3 x ptr], ptr %p, i32 0, i32 %shl
20 %l0 = load ptr, ptr %arrayidx926, align 1