| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 |
| ; Regression test for https://bugs.llvm.org/show_bug.cgi?id=32842 |
| ; |
| ; RUN: opt < %s -S -passes=msan 2>&1 | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Make sure the shadow of the (x < y) comparison isn't truncated to i1. |
| |
| define zeroext i1 @_Z1fii(i32 %x, i32 %y) sanitize_memory { |
| ; CHECK-LABEL: define zeroext i1 @_Z1fii( |
| ; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) #[[ATTR0:[0-9]+]] { |
| ; CHECK-NEXT: [[ENTRY:.*:]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @__msan_param_tls, align 8 |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr inttoptr (i64 add (i64 ptrtoint (ptr @__msan_param_tls to i64), i64 8) to ptr), align 8 |
| ; CHECK-NEXT: call void @llvm.donothing() |
| ; CHECK-NEXT: [[TMP10:%.*]] = xor i32 [[X]], -2147483648 |
| ; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP0]], -1 |
| ; CHECK-NEXT: [[TMP4:%.*]] = and i32 [[TMP10]], [[TMP3]] |
| ; CHECK-NEXT: [[TMP5:%.*]] = or i32 [[TMP10]], [[TMP0]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = xor i32 [[Y]], -2147483648 |
| ; CHECK-NEXT: [[TMP7:%.*]] = xor i32 [[TMP1]], -1 |
| ; CHECK-NEXT: [[TMP8:%.*]] = and i32 [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = or i32 [[TMP6]], [[TMP1]] |
| ; CHECK-NEXT: [[TMP14:%.*]] = icmp ult i32 [[TMP4]], [[TMP9]] |
| ; CHECK-NEXT: [[TMP27:%.*]] = icmp ult i32 [[TMP5]], [[TMP8]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = xor i1 [[TMP14]], [[TMP27]] |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[X]], [[Y]] |
| ; CHECK-NEXT: store i1 [[TMP2]], ptr @__msan_retval_tls, align 8 |
| ; CHECK-NEXT: ret i1 [[CMP]] |
| ; |
| entry: |
| %cmp = icmp slt i32 %x, %y |
| ret i1 %cmp |
| } |
