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llvm-project/llvm/test/CodeGen/X86/pr33844.ll

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[X86] Don't try to scale down if that exceeds the bitwidth. Fixes the crash reported in PR33844. llvm-svn: 308503
2017-07-20 02:09:46 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -o - %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@global = external global i32
@global.1 = external global i64
define void @patatino() {
; CHECK-LABEL: patatino:
[CodeGen] Unify MBB reference format in both MIR and debug output As part of the unification of the debug format and the MIR format, print MBB references as '%bb.5'. The MIR printer prints the IR name of a MBB only for block definitions. * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g' * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g' * find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g' * grep -nr 'BB#' and fix Differential Revision: https://reviews.llvm.org/D40422 llvm-svn: 319665
2017-12-05 01:18:51 +08:00
; CHECK: # %bb.0: # %bb
[X86] Don't try to scale down if that exceeds the bitwidth. Fixes the crash reported in PR33844. llvm-svn: 308503
2017-07-20 02:09:46 +08:00
; CHECK-NEXT: movl {{.*}}(%rip), %eax
; CHECK-NEXT: movl %eax, %ecx
; CHECK-NEXT: shrl $31, %ecx
; CHECK-NEXT: addl $2147483647, %ecx # imm = 0x7FFFFFFF
; CHECK-NEXT: shrl $31, %ecx
; CHECK-NEXT: andl $62, %ecx
; CHECK-NEXT: andl $-536870912, %eax # imm = 0xE0000000
; CHECK-NEXT: orl %ecx, %eax
; CHECK-NEXT: movl %eax, {{.*}}(%rip)
; CHECK-NEXT: retq
bb:
%tmp = load i32, i32* @global
%tmp1 = lshr i32 %tmp, 31
%tmp2 = add nuw nsw i32 %tmp1, 2147483647
%tmp3 = load i64, i64* @global.1
%tmp4 = shl i64 %tmp3, 23
%tmp5 = add nsw i64 %tmp4, 8388639
%tmp6 = trunc i64 %tmp5 to i32
%tmp7 = lshr i32 %tmp2, %tmp6
%tmp8 = load i32, i32* @global
%tmp9 = and i32 %tmp7, 62
%tmp10 = and i32 %tmp8, -536870912
%tmp11 = or i32 %tmp9, %tmp10
store i32 %tmp11, i32* @global
ret void
}