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llvm-project/llvm/test/CodeGen/X86/shl-crash-on-legalize.ll

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Shift-left (ISD::SHL) operation crashes on "DAG Legalization" phase. https://llvm.org/bugs/show_bug.cgi?id=29058. While node legalization we tried to legalize its operands. If an operand node is replaced during legalization the user node may be destroyed. Differential Revision: https://reviews.llvm.org/D24244 llvm-svn: 280862
2016-09-08 04:54:33 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
;RUN: llc < %s | FileCheck %s
; This test case failed on legalization of "shl" node. PR29058.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@structMember = external local_unnamed_addr global i64, align 8
[x86] make tests immune to improvements in undef handling llvm-svn: 347161
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define i32 @PR29058(i8 %x, i32 %y) {
; CHECK-LABEL: PR29058:
[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: # %entry
[x86] make tests immune to improvements in undef handling llvm-svn: 347161
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; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: testb %dil, %dil
; CHECK-NEXT: movl $2147483646, %eax # imm = 0x7FFFFFFE
; CHECK-NEXT: cmovnel %esi, %eax
[X86] Emit SBB instead of SETCC_CARRY from LowerSELECT. Break false dependency on the SBB input. I'm hoping we can just replace SETCC_CARRY with SBB. This is another step towards that. I've explicitly used zero as the input to the setcc to avoid a false dependency that we've had with the SETCC_CARRY. I changed one of the patterns that used NEG to instead use an explicit compare with 0 on the LHS. We needed the zero anyway to avoid the false dependency. The negate would clobber its input register. By using a CMP we can avoid that which could be useful. Differential Revision: https://reviews.llvm.org/D55414 llvm-svn: 348959
2018-12-13 03:20:21 +08:00
; CHECK-NEXT: xorl %edx, %edx
[x86] make tests immune to improvements in undef handling llvm-svn: 347161
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; CHECK-NEXT: cmpb $1, %dil
; CHECK-NEXT: sbbb %dl, %dl
; CHECK-NEXT: orb %dl, %cl
; CHECK-NEXT: # kill: def $cl killed $cl killed $ecx
; CHECK-NEXT: shll %cl, %eax
Shift-left (ISD::SHL) operation crashes on "DAG Legalization" phase. https://llvm.org/bugs/show_bug.cgi?id=29058. While node legalization we tried to legalize its operands. If an operand node is replaced during legalization the user node may be destroyed. Differential Revision: https://reviews.llvm.org/D24244 llvm-svn: 280862
2016-09-08 04:54:33 +08:00
; CHECK-NEXT: movq %rax, {{.*}}(%rip)
[x86] make tests immune to improvements in undef handling llvm-svn: 347161
2018-11-18 23:27:19 +08:00
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
Shift-left (ISD::SHL) operation crashes on "DAG Legalization" phase. https://llvm.org/bugs/show_bug.cgi?id=29058. While node legalization we tried to legalize its operands. If an operand node is replaced during legalization the user node may be destroyed. Differential Revision: https://reviews.llvm.org/D24244 llvm-svn: 280862
2016-09-08 04:54:33 +08:00
; CHECK-NEXT: retq
entry:
[x86] make tests immune to improvements in undef handling llvm-svn: 347161
2018-11-18 23:27:19 +08:00
%bool_1 = icmp ne i8 %x, 0
%bool_2 = icmp eq i8 %x, 0
%0 = select i1 %bool_2, i32 2147483646, i32 %y
%or_1 = select i1 %bool_1, i32 %y, i32 -1
Shift-left (ISD::SHL) operation crashes on "DAG Legalization" phase. https://llvm.org/bugs/show_bug.cgi?id=29058. While node legalization we tried to legalize its operands. If an operand node is replaced during legalization the user node may be destroyed. Differential Revision: https://reviews.llvm.org/D24244 llvm-svn: 280862
2016-09-08 04:54:33 +08:00
%shl_1 = shl i32 %0, %or_1
%conv = zext i32 %shl_1 to i64
store i64 %conv, i64* @structMember, align 8
[x86] make tests immune to improvements in undef handling llvm-svn: 347161
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%tmp = select i1 %bool_2, i32 2147483646, i32 %y
%lnot = icmp eq i8 %x, 0
%or_2 = select i1 %lnot, i32 -1, i32 %y
Shift-left (ISD::SHL) operation crashes on "DAG Legalization" phase. https://llvm.org/bugs/show_bug.cgi?id=29058. While node legalization we tried to legalize its operands. If an operand node is replaced during legalization the user node may be destroyed. Differential Revision: https://reviews.llvm.org/D24244 llvm-svn: 280862
2016-09-08 04:54:33 +08:00
%shl_2 = shl i32 %tmp, %or_2
ret i32 %shl_2
}