forked from OSchip/llvm-project
[InstCombine] Tests for fold Select with binary op
Differential Revision: https://reviews.llvm.org/D49961 llvm-svn: 338201
This commit is contained in:
David Bolvansky
parent
818b253d3a
commit
f801a58c0d
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @select_xor_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_xor_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = xor i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_mul_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_mul_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
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; CHECK-NEXT: [[B:%.*]] = mul i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 1
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%B = mul i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_add_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_add_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = add i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = add i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_or_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_or_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = or i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = or i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_and_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_and_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], -1
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; CHECK-NEXT: [[B:%.*]] = and i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, -1
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%B = and i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define <2 x i8> @select_xor_icmp_vec(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
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; CHECK-LABEL: @select_xor_icmp_vec(
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; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], zeroinitializer
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; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[C]]
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;
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%A = icmp eq <2 x i8> %x, <i8 0, i8 0>
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%B = xor <2 x i8> %x, %z
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%C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y
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ret <2 x i8> %C
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}
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define <2 x i8> @select_xor_icmp_vec2(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
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; CHECK-LABEL: @select_xor_icmp_vec2(
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; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], <i8 0, i8 undef>
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; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[C]]
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;
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%A = icmp eq <2 x i8> %x, <i8 0, i8 undef>
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%B = xor <2 x i8> %x, %z
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%C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y
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ret <2 x i8> %C
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}
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define i32 @select_xor_inv_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_xor_inv_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[Z:%.*]], [[X]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = xor i32 %z, %x
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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; Negative tests
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define i32 @select_xor_icmp_bad_1(i32 %x, i32 %y, i32 %z, i32 %k) {
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; CHECK-LABEL: @select_xor_icmp_bad_1(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], [[K:%.*]]
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, %k
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%B = xor i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_xor_icmp_bad_2(i32 %x, i32 %y, i32 %z, i32 %k) {
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; CHECK-LABEL: @select_xor_icmp_bad_2(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[K:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = xor i32 %k, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_xor_icmp_bad_3(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_xor_icmp_bad_3(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 3
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%B = xor i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_xor_icmp_bad_4(i32 %x, i32 %y, i32 %z, i32 %k) {
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; CHECK-LABEL: @select_xor_icmp_bad_4(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], [[K:%.*]]
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, %k
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%B = xor i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_xor_icmp_bad_5(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_xor_icmp_bad_5(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Y:%.*]], i32 [[B]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp ne i32 %x, 0
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%B = xor i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define <2 x i8> @select_xor_icmp_vec_bad(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
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; CHECK-LABEL: @select_xor_icmp_vec_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], <i8 5, i8 3>
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; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[C]]
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;
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%A = icmp eq <2 x i8> %x, <i8 5, i8 3>
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%B = xor <2 x i8> %x, %z
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%C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y
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ret <2 x i8> %C
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}
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define i32 @select_mul_icmp_bad(i32 %x, i32 %y, i32 %z, i32 %k) {
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; CHECK-LABEL: @select_mul_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3
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; CHECK-NEXT: [[B:%.*]] = mul i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 3
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%B = mul i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_add_icmp_bad(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_add_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
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; CHECK-NEXT: [[B:%.*]] = add i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 1
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%B = add i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_and_icmp_bad(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_and_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = and i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = and i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_or_icmp_bad(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_or_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3
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; CHECK-NEXT: [[B:%.*]] = or i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 3
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%B = or i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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; TODO: Support for non-commutative opcodes
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define i32 @select_sub_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_sub_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = sub i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = sub i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_shl_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_shl_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = shl i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = shl i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_lshr_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_lshr_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = lshr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = lshr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_ashr_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_ashr_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = ashr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = ashr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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; TODO: Support for FP opcodes
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define float @select_fadd_icmp(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], -0.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, -0.0
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%B = fadd float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fadd_icmp2(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp2(
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; CHECK-NEXT: [[A:%.*]] = fcmp ueq float [[X:%.*]], -0.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp ueq float %x, -0.0
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%B = fadd float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fmul_icmp(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fmul_icmp(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fmul float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, 1.0
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%B = fmul float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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