5080a0251f
DAG combiner already does this transformation, but in some cases it does not have a chance because either CodeGenPrepare or SelectionDAGBuilder move icmp to a different basic block. https://alive2.llvm.org/ce/z/ARzh99 Fixes #94829 Pull Request: https://github.com/llvm/llvm-project/pull/102731
124 lines
4.2 KiB
LLVM
124 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -p 'require<profile-summary>,function(codegenprepare)' -S %s \
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; RUN: | FileCheck %s --check-prefix=SLOW
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; RUN: opt -p 'require<profile-summary>,function(codegenprepare)' -S --mattr=+zbb %s \
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; RUN: | FileCheck %s --check-prefix=FAST
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; REQUIRES: riscv-registered-target
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target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"
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target triple = "riscv64"
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define i1 @test_ult_2(i64 %x) {
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; SLOW-LABEL: define i1 @test_ult_2(
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; SLOW-SAME: i64 [[X:%.*]]) {
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; SLOW-NEXT: [[TMP0:%.*]] = add i64 [[X]], -1
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; SLOW-NEXT: [[TMP1:%.*]] = and i64 [[X]], [[TMP0]]
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; SLOW-NEXT: [[CMP1:%.*]] = icmp eq i64 [[TMP1]], 0
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; SLOW-NEXT: ret i1 [[CMP1]]
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;
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; FAST-LABEL: define i1 @test_ult_2(
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; FAST-SAME: i64 [[X:%.*]]) #[[ATTR0:[0-9]+]] {
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; FAST-NEXT: [[CTPOP:%.*]] = call i64 @llvm.ctpop.i64(i64 [[X]])
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; FAST-NEXT: [[CMP1:%.*]] = icmp ult i64 [[CTPOP]], 2
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; FAST-NEXT: ret i1 [[CMP1]]
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;
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%ctpop = call i64 @llvm.ctpop(i64 %x)
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%cmp = icmp ult i64 %ctpop, 2
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ret i1 %cmp
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}
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define i1 @test_ugt_1(i64 %x) {
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; SLOW-LABEL: define i1 @test_ugt_1(
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; SLOW-SAME: i64 [[X:%.*]]) {
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; SLOW-NEXT: [[TMP0:%.*]] = add i64 [[X]], -1
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; SLOW-NEXT: [[TMP1:%.*]] = and i64 [[X]], [[TMP0]]
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; SLOW-NEXT: [[CMP1:%.*]] = icmp ne i64 [[TMP1]], 0
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; SLOW-NEXT: ret i1 [[CMP1]]
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;
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; FAST-LABEL: define i1 @test_ugt_1(
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; FAST-SAME: i64 [[X:%.*]]) #[[ATTR0]] {
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; FAST-NEXT: [[CTPOP:%.*]] = call i64 @llvm.ctpop.i64(i64 [[X]])
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; FAST-NEXT: [[CMP1:%.*]] = icmp ugt i64 [[CTPOP]], 1
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; FAST-NEXT: ret i1 [[CMP1]]
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;
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%ctpop = call i64 @llvm.ctpop(i64 %x)
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%cmp = icmp ugt i64 %ctpop, 1
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ret i1 %cmp
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}
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define i1 @test_eq_1_nz(i64 %x) {
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; SLOW-LABEL: define i1 @test_eq_1_nz(
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; SLOW-SAME: i64 [[X:%.*]]) {
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; SLOW-NEXT: [[TMP0:%.*]] = add i64 [[X]], -1
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; SLOW-NEXT: [[TMP1:%.*]] = and i64 [[X]], [[TMP0]]
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; SLOW-NEXT: [[TMP2:%.*]] = icmp eq i64 [[TMP1]], 0
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; SLOW-NEXT: ret i1 [[TMP2]]
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;
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; FAST-LABEL: define i1 @test_eq_1_nz(
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; FAST-SAME: i64 [[X:%.*]]) #[[ATTR0]] {
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; FAST-NEXT: [[CTPOP:%.*]] = call range(i64 1, 33) i64 @llvm.ctpop.i64(i64 [[X]])
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; FAST-NEXT: [[CMP1:%.*]] = icmp ult i64 [[CTPOP]], 2
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; FAST-NEXT: ret i1 [[CMP1]]
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;
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%ctpop = call range(i64 1, 33) i64 @llvm.ctpop(i64 %x)
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%cmp = icmp eq i64 %ctpop, 1
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ret i1 %cmp
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}
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define i1 @test_ne_1_nz(i64 %x) {
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; SLOW-LABEL: define i1 @test_ne_1_nz(
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; SLOW-SAME: i64 [[X:%.*]]) {
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; SLOW-NEXT: [[TMP0:%.*]] = add i64 [[X]], -1
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; SLOW-NEXT: [[TMP1:%.*]] = and i64 [[X]], [[TMP0]]
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; SLOW-NEXT: [[TMP2:%.*]] = icmp ne i64 [[TMP1]], 0
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; SLOW-NEXT: ret i1 [[TMP2]]
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;
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; FAST-LABEL: define i1 @test_ne_1_nz(
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; FAST-SAME: i64 [[X:%.*]]) #[[ATTR0]] {
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; FAST-NEXT: [[CTPOP:%.*]] = call range(i64 1, 33) i64 @llvm.ctpop.i64(i64 [[X]])
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; FAST-NEXT: [[CMP1:%.*]] = icmp ugt i64 [[CTPOP]], 1
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; FAST-NEXT: ret i1 [[CMP1]]
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;
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%ctpop = call range(i64 1, 33) i64 @llvm.ctpop(i64 %x)
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%cmp = icmp ne i64 %ctpop, 1
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ret i1 %cmp
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}
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define i1 @test_eq_1(i64 %x) {
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; SLOW-LABEL: define i1 @test_eq_1(
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; SLOW-SAME: i64 [[X:%.*]]) {
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; SLOW-NEXT: [[TMP0:%.*]] = add i64 [[X]], -1
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; SLOW-NEXT: [[TMP1:%.*]] = xor i64 [[X]], [[TMP0]]
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; SLOW-NEXT: [[TMP2:%.*]] = icmp ugt i64 [[TMP1]], [[TMP0]]
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; SLOW-NEXT: ret i1 [[TMP2]]
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;
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; FAST-LABEL: define i1 @test_eq_1(
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; FAST-SAME: i64 [[X:%.*]]) #[[ATTR0]] {
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; FAST-NEXT: [[CTPOP:%.*]] = call i64 @llvm.ctpop.i64(i64 [[X]])
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; FAST-NEXT: [[CMP1:%.*]] = icmp eq i64 [[CTPOP]], 1
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; FAST-NEXT: ret i1 [[CMP1]]
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;
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%ctpop = call i64 @llvm.ctpop(i64 %x)
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%cmp = icmp eq i64 %ctpop, 1
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ret i1 %cmp
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}
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define i1 @test_ne_1(i64 %x) {
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; SLOW-LABEL: define i1 @test_ne_1(
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; SLOW-SAME: i64 [[X:%.*]]) {
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; SLOW-NEXT: [[TMP0:%.*]] = add i64 [[X]], -1
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; SLOW-NEXT: [[TMP1:%.*]] = xor i64 [[X]], [[TMP0]]
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; SLOW-NEXT: [[TMP2:%.*]] = icmp ule i64 [[TMP1]], [[TMP0]]
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; SLOW-NEXT: ret i1 [[TMP2]]
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;
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; FAST-LABEL: define i1 @test_ne_1(
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; FAST-SAME: i64 [[X:%.*]]) #[[ATTR0]] {
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; FAST-NEXT: [[CTPOP:%.*]] = call i64 @llvm.ctpop.i64(i64 [[X]])
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; FAST-NEXT: [[CMP1:%.*]] = icmp ne i64 [[CTPOP]], 1
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; FAST-NEXT: ret i1 [[CMP1]]
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;
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%ctpop = call i64 @llvm.ctpop(i64 %x)
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%cmp = icmp ne i64 %ctpop, 1
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ret i1 %cmp
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}
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