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llvm-project/llvm/test/CodeGen/AArch64/selectcc-to-shiftand.ll

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[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; RUN: llc < %s -mtriple=aarch64-unknown-unknown | FileCheck %s
; Compare if negative and select of constants where one constant is zero.
define i32 @neg_sel_constants(i32 %a) {
; CHECK-LABEL: neg_sel_constants:
[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:
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: mov w8, #5
; CHECK-NEXT: and w0, w8, w0, asr #31
; CHECK-NEXT: ret
;
%tmp.1 = icmp slt i32 %a, 0
%retval = select i1 %tmp.1, i32 5, i32 0
ret i32 %retval
}
; Compare if negative and select of constants where one constant is zero and the other is a single bit.
define i32 @neg_sel_special_constant(i32 %a) {
; CHECK-LABEL: neg_sel_special_constant:
[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:
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: lsr w8, w0, #22
; CHECK-NEXT: and w0, w8, #0x200
; CHECK-NEXT: ret
;
%tmp.1 = icmp slt i32 %a, 0
%retval = select i1 %tmp.1, i32 512, i32 0
ret i32 %retval
}
; Compare if negative and select variable or zero.
define i32 @neg_sel_variable_and_zero(i32 %a, i32 %b) {
; CHECK-LABEL: neg_sel_variable_and_zero:
[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:
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: and w0, w1, w0, asr #31
; CHECK-NEXT: ret
;
%tmp.1 = icmp slt i32 %a, 0
%retval = select i1 %tmp.1, i32 %b, i32 0
ret i32 %retval
}
; Compare if not positive and select the same variable as being compared: smin(a, 0).
define i32 @not_pos_sel_same_variable(i32 %a) {
; CHECK-LABEL: not_pos_sel_same_variable:
[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:
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: and w0, w0, w0, asr #31
; CHECK-NEXT: ret
;
%tmp = icmp slt i32 %a, 1
%min = select i1 %tmp, i32 %a, i32 0
ret i32 %min
}
[DAG] allow more select folding for targets that have 'and not' (PR31175) The original motivation for this patch comes from wanting to canonicalize more IR to selects and also canonicalizing min/max. If we're going to do that, we need more backend fixups to undo select codegen when simpler ops will do. I chose AArch64 for the tests because that shows the difference in the simplest way. This should fix: https://llvm.org/bugs/show_bug.cgi?id=31175 Differential Revision: https://reviews.llvm.org/D27489 llvm-svn: 289738
2016-12-15 06:59:14 +08:00
; Flipping the comparison condition can be handled by getting the bitwise not of the sign mask.
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; Compare if positive and select of constants where one constant is zero.
define i32 @pos_sel_constants(i32 %a) {
; CHECK-LABEL: pos_sel_constants:
[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:
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: mov w8, #5
[DAG] allow more select folding for targets that have 'and not' (PR31175) The original motivation for this patch comes from wanting to canonicalize more IR to selects and also canonicalizing min/max. If we're going to do that, we need more backend fixups to undo select codegen when simpler ops will do. I chose AArch64 for the tests because that shows the difference in the simplest way. This should fix: https://llvm.org/bugs/show_bug.cgi?id=31175 Differential Revision: https://reviews.llvm.org/D27489 llvm-svn: 289738
2016-12-15 06:59:14 +08:00
; CHECK-NEXT: bic w0, w8, w0, asr #31
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: ret
;
%tmp.1 = icmp sgt i32 %a, -1
%retval = select i1 %tmp.1, i32 5, i32 0
ret i32 %retval
}
; Compare if positive and select of constants where one constant is zero and the other is a single bit.
define i32 @pos_sel_special_constant(i32 %a) {
; CHECK-LABEL: pos_sel_special_constant:
[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:
[DAG] allow more select folding for targets that have 'and not' (PR31175) The original motivation for this patch comes from wanting to canonicalize more IR to selects and also canonicalizing min/max. If we're going to do that, we need more backend fixups to undo select codegen when simpler ops will do. I chose AArch64 for the tests because that shows the difference in the simplest way. This should fix: https://llvm.org/bugs/show_bug.cgi?id=31175 Differential Revision: https://reviews.llvm.org/D27489 llvm-svn: 289738
2016-12-15 06:59:14 +08:00
; CHECK-NEXT: orr w8, wzr, #0x200
; CHECK-NEXT: bic w0, w8, w0, lsr #22
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: ret
;
%tmp.1 = icmp sgt i32 %a, -1
%retval = select i1 %tmp.1, i32 512, i32 0
ret i32 %retval
}
; Compare if positive and select variable or zero.
define i32 @pos_sel_variable_and_zero(i32 %a, i32 %b) {
; CHECK-LABEL: pos_sel_variable_and_zero:
[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:
[DAG] allow more select folding for targets that have 'and not' (PR31175) The original motivation for this patch comes from wanting to canonicalize more IR to selects and also canonicalizing min/max. If we're going to do that, we need more backend fixups to undo select codegen when simpler ops will do. I chose AArch64 for the tests because that shows the difference in the simplest way. This should fix: https://llvm.org/bugs/show_bug.cgi?id=31175 Differential Revision: https://reviews.llvm.org/D27489 llvm-svn: 289738
2016-12-15 06:59:14 +08:00
; CHECK-NEXT: bic w0, w1, w0, asr #31
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: ret
;
%tmp.1 = icmp sgt i32 %a, -1
%retval = select i1 %tmp.1, i32 %b, i32 0
ret i32 %retval
}
; Compare if not negative or zero and select the same variable as being compared: smax(a, 0).
define i32 @not_neg_sel_same_variable(i32 %a) {
; CHECK-LABEL: not_neg_sel_same_variable:
[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:
[DAG] allow more select folding for targets that have 'and not' (PR31175) The original motivation for this patch comes from wanting to canonicalize more IR to selects and also canonicalizing min/max. If we're going to do that, we need more backend fixups to undo select codegen when simpler ops will do. I chose AArch64 for the tests because that shows the difference in the simplest way. This should fix: https://llvm.org/bugs/show_bug.cgi?id=31175 Differential Revision: https://reviews.llvm.org/D27489 llvm-svn: 289738
2016-12-15 06:59:14 +08:00
; CHECK-NEXT: bic w0, w0, w0, asr #31
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: ret
;
%tmp = icmp sgt i32 %a, 0
%min = select i1 %tmp, i32 %a, i32 0
ret i32 %min
}
; https://llvm.org/bugs/show_bug.cgi?id=31175
; ret = (x-y) > 0 ? x-y : 0
define i32 @PR31175(i32 %x, i32 %y) {
; CHECK-LABEL: PR31175:
[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:
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: sub w8, w0, w1
[DAG] allow more select folding for targets that have 'and not' (PR31175) The original motivation for this patch comes from wanting to canonicalize more IR to selects and also canonicalizing min/max. If we're going to do that, we need more backend fixups to undo select codegen when simpler ops will do. I chose AArch64 for the tests because that shows the difference in the simplest way. This should fix: https://llvm.org/bugs/show_bug.cgi?id=31175 Differential Revision: https://reviews.llvm.org/D27489 llvm-svn: 289738
2016-12-15 06:59:14 +08:00
; CHECK-NEXT: bic w0, w8, w8, asr #31
[AArch64] add tests to show select transforms; NFC llvm-svn: 288180
2016-11-30 02:35:04 +08:00
; CHECK-NEXT: ret
;
%sub = sub nsw i32 %x, %y
%cmp = icmp sgt i32 %sub, 0
%sel = select i1 %cmp, i32 %sub, i32 0
ret i32 %sel
}