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

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[X86][SSE] Regenerate TRUNC-SEXT tests Tidied up triple and regenerate tests using update_llc_test_checks.py llvm-svn: 253782
2015-11-21 21:32:29 +08:00
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=-sse4.1 | FileCheck %s --check-prefix=NO_SSE_41
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefix=SSE_41
Fix a logic bug in x86 vector codegen: sext (zext (x) ) != sext (x) (PR20472). Remove a block of code from LowerSIGN_EXTEND_INREG() that was added with: http://llvm.org/viewvc/llvm-project?view=revision&revision=177421 And caused: http://llvm.org/bugs/show_bug.cgi?id=20472 (more analysis here) http://llvm.org/bugs/show_bug.cgi?id=18054 The testcases confirm that we (1) don't remove a zext op that is necessary and (2) generate a pmovz instead of punpck if SSE4.1 is available. Although pmovz is 1 byte longer, it allows folding of the load, and so saves 3 bytes overall. Differential Revision: http://reviews.llvm.org/D4909 llvm-svn: 216679
2014-08-29 02:59:22 +08:00
; PR20472 ( http://llvm.org/bugs/show_bug.cgi?id=20472 )
; When sexting a trunc'd vector value, we can't eliminate the zext.
; If we don't have SSE4.1, use punpck.
; If we have SSE4.1, use pmovzx because it combines the load op.
; There may be a better way to do this using pshufb + pmovsx,
; but that is beyond our current codegen capabilities.
define <4 x i32> @trunc_sext(<4 x i16>* %in) {
[X86][SSE] Regenerate TRUNC-SEXT tests Tidied up triple and regenerate tests using update_llc_test_checks.py llvm-svn: 253782
2015-11-21 21:32:29 +08:00
; NO_SSE_41-LABEL: trunc_sext:
[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
; NO_SSE_41: # %bb.0:
[X86][SSE] Regenerate TRUNC-SEXT tests Tidied up triple and regenerate tests using update_llc_test_checks.py llvm-svn: 253782
2015-11-21 21:32:29 +08:00
; NO_SSE_41-NEXT: movq {{.*#+}} xmm0 = mem[0],zero
; NO_SSE_41-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3]
; NO_SSE_41-NEXT: pslld $24, %xmm0
; NO_SSE_41-NEXT: psrad $24, %xmm0
; NO_SSE_41-NEXT: retq
;
; SSE_41-LABEL: trunc_sext:
[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
; SSE_41: # %bb.0:
[X86][SSE] Regenerate TRUNC-SEXT tests Tidied up triple and regenerate tests using update_llc_test_checks.py llvm-svn: 253782
2015-11-21 21:32:29 +08:00
; SSE_41-NEXT: pmovzxwd {{.*#+}} xmm0 = mem[0],zero,mem[1],zero,mem[2],zero,mem[3],zero
; SSE_41-NEXT: pslld $24, %xmm0
; SSE_41-NEXT: psrad $24, %xmm0
; SSE_41-NEXT: retq
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%load = load <4 x i16>, <4 x i16>* %in
Fix a logic bug in x86 vector codegen: sext (zext (x) ) != sext (x) (PR20472). Remove a block of code from LowerSIGN_EXTEND_INREG() that was added with: http://llvm.org/viewvc/llvm-project?view=revision&revision=177421 And caused: http://llvm.org/bugs/show_bug.cgi?id=20472 (more analysis here) http://llvm.org/bugs/show_bug.cgi?id=18054 The testcases confirm that we (1) don't remove a zext op that is necessary and (2) generate a pmovz instead of punpck if SSE4.1 is available. Although pmovz is 1 byte longer, it allows folding of the load, and so saves 3 bytes overall. Differential Revision: http://reviews.llvm.org/D4909 llvm-svn: 216679
2014-08-29 02:59:22 +08:00
%trunc = trunc <4 x i16> %load to <4 x i8>
%sext = sext <4 x i8> %trunc to <4 x i32>
ret <4 x i32> %sext
}