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llvm-project/llvm/test/CodeGen/X86/avx512-adc-sbb.ll

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[x86] avoid adc/sbb assert when both sides of add are zexted (PR32316) As noted in the comment, we might want to account for this case, but I didn't look at what that would mean for the asm. I'm also not sure why this only reproduces with avx512, but I'm putting a conservative fix in for now to avoid the crash. Also, if both sides of an add are zexted, shouldn't we shrink that add? https://bugs.llvm.org/show_bug.cgi?id=32316 llvm-svn: 298107
2017-03-18 01:27:31 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=avx512f %s -o - | FileCheck %s
; This asserted because we didn't account for a zext of a non-SETCC node:
; https://bugs.llvm.org/show_bug.cgi?id=32316
define i8 @PR32316(i8 %t1, i32 %t5, i8 %t8) {
; CHECK-LABEL: PR32316:
[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:
[x86] avoid adc/sbb assert when both sides of add are zexted (PR32316) As noted in the comment, we might want to account for this case, but I didn't look at what that would mean for the asm. I'm also not sure why this only reproduces with avx512, but I'm putting a conservative fix in for now to avoid the crash. Also, if both sides of an add are zexted, shouldn't we shrink that add? https://bugs.llvm.org/show_bug.cgi?id=32316 llvm-svn: 298107
2017-03-18 01:27:31 +08:00
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testb %dil, %dil
; CHECK-NEXT: sete %al
; CHECK-NEXT: cmpl %esi, %eax
; CHECK-NEXT: seta %al
; CHECK-NEXT: cmpb $1, %dl
; CHECK-NEXT: sbbb $-1, %al
; CHECK-NEXT: retq
%t2 = icmp eq i8 %t1, 0
%t3 = zext i1 %t2 to i32
%t6 = icmp ugt i32 %t3, %t5
%t7 = zext i1 %t6 to i8
%t9 = icmp ne i8 %t8, 0
%t10 = zext i1 %t9 to i8
%t11 = add i8 %t7, %t10
ret i8 %t11
}