[llvm] r338201 - [InstCombine] Tests for fold Select with binary op
David Bolvansky via llvm-commits
llvm-commits at lists.llvm.org
Sat Jul 28 10:13:34 PDT 2018
Author: xbolva00
Date: Sat Jul 28 10:13:33 2018
New Revision: 338201
URL: http://llvm.org/viewvc/llvm-project?rev=338201&view=rev
Log:
[InstCombine] Tests for fold Select with binary op
Differential Revision: https://reviews.llvm.org/D49961
Added:
llvm/trunk/test/Transforms/InstCombine/select-binop-icmp.ll
Added: llvm/trunk/test/Transforms/InstCombine/select-binop-icmp.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/select-binop-icmp.ll?rev=338201&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/select-binop-icmp.ll (added)
+++ llvm/trunk/test/Transforms/InstCombine/select-binop-icmp.ll Sat Jul 28 10:13:33 2018
@@ -0,0 +1,330 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define i32 @select_xor_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_xor_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = xor i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_mul_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_mul_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
+; CHECK-NEXT: [[B:%.*]] = mul i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 1
+ %B = mul i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_add_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_add_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = add i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = add i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_or_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_or_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = or i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = or i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_and_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_and_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], -1
+; CHECK-NEXT: [[B:%.*]] = and i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, -1
+ %B = and i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define <2 x i8> @select_xor_icmp_vec(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
+; CHECK-LABEL: @select_xor_icmp_vec(
+; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], zeroinitializer
+; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]]
+; CHECK-NEXT: ret <2 x i8> [[C]]
+;
+ %A = icmp eq <2 x i8> %x, <i8 0, i8 0>
+ %B = xor <2 x i8> %x, %z
+ %C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y
+ ret <2 x i8> %C
+}
+
+define <2 x i8> @select_xor_icmp_vec2(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
+; CHECK-LABEL: @select_xor_icmp_vec2(
+; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], <i8 0, i8 undef>
+; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]]
+; CHECK-NEXT: ret <2 x i8> [[C]]
+;
+ %A = icmp eq <2 x i8> %x, <i8 0, i8 undef>
+ %B = xor <2 x i8> %x, %z
+ %C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y
+ ret <2 x i8> %C
+}
+
+define i32 @select_xor_inv_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_xor_inv_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = xor i32 [[Z:%.*]], [[X]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = xor i32 %z, %x
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+; Negative tests
+define i32 @select_xor_icmp_bad_1(i32 %x, i32 %y, i32 %z, i32 %k) {
+; CHECK-LABEL: @select_xor_icmp_bad_1(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], [[K:%.*]]
+; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, %k
+ %B = xor i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_xor_icmp_bad_2(i32 %x, i32 %y, i32 %z, i32 %k) {
+; CHECK-LABEL: @select_xor_icmp_bad_2(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = xor i32 [[K:%.*]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = xor i32 %k, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_xor_icmp_bad_3(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_xor_icmp_bad_3(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3
+; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 3
+ %B = xor i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_xor_icmp_bad_4(i32 %x, i32 %y, i32 %z, i32 %k) {
+; CHECK-LABEL: @select_xor_icmp_bad_4(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], [[K:%.*]]
+; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, %k
+ %B = xor i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_xor_icmp_bad_5(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_xor_icmp_bad_5(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Y:%.*]], i32 [[B]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp ne i32 %x, 0
+ %B = xor i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define <2 x i8> @select_xor_icmp_vec_bad(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
+; CHECK-LABEL: @select_xor_icmp_vec_bad(
+; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], <i8 5, i8 3>
+; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]]
+; CHECK-NEXT: ret <2 x i8> [[C]]
+;
+ %A = icmp eq <2 x i8> %x, <i8 5, i8 3>
+ %B = xor <2 x i8> %x, %z
+ %C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y
+ ret <2 x i8> %C
+}
+
+define i32 @select_mul_icmp_bad(i32 %x, i32 %y, i32 %z, i32 %k) {
+; CHECK-LABEL: @select_mul_icmp_bad(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3
+; CHECK-NEXT: [[B:%.*]] = mul i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 3
+ %B = mul i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_add_icmp_bad(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_add_icmp_bad(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
+; CHECK-NEXT: [[B:%.*]] = add i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 1
+ %B = add i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_and_icmp_bad(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_and_icmp_bad(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = and i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = and i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_or_icmp_bad(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_or_icmp_bad(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3
+; CHECK-NEXT: [[B:%.*]] = or i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 3
+ %B = or i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+; TODO: Support for non-commutative opcodes
+define i32 @select_sub_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_sub_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = sub i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = sub i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_shl_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_shl_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = shl i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = shl i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_lshr_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_lshr_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = lshr i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = lshr i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+define i32 @select_ashr_icmp(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @select_ashr_icmp(
+; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
+; CHECK-NEXT: [[B:%.*]] = ashr i32 [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
+; CHECK-NEXT: ret i32 [[C]]
+;
+ %A = icmp eq i32 %x, 0
+ %B = ashr i32 %x, %z
+ %C = select i1 %A, i32 %B, i32 %y
+ ret i32 %C
+}
+
+; TODO: Support for FP opcodes
+define float @select_fadd_icmp(float %x, float %y, float %z) {
+; CHECK-LABEL: @select_fadd_icmp(
+; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], -0.000000e+00
+; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
+; CHECK-NEXT: ret float [[C]]
+;
+ %A = fcmp oeq float %x, -0.0
+ %B = fadd float %x, %z
+ %C = select i1 %A, float %B, float %y
+ ret float %C
+}
+
+define float @select_fadd_icmp2(float %x, float %y, float %z) {
+; CHECK-LABEL: @select_fadd_icmp2(
+; CHECK-NEXT: [[A:%.*]] = fcmp ueq float [[X:%.*]], -0.000000e+00
+; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
+; CHECK-NEXT: ret float [[C]]
+;
+ %A = fcmp ueq float %x, -0.0
+ %B = fadd float %x, %z
+ %C = select i1 %A, float %B, float %y
+ ret float %C
+}
+
+define float @select_fmul_icmp(float %x, float %y, float %z) {
+; CHECK-LABEL: @select_fmul_icmp(
+; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
+; CHECK-NEXT: [[B:%.*]] = fmul float [[X]], [[Z:%.*]]
+; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
+; CHECK-NEXT: ret float [[C]]
+;
+ %A = fcmp oeq float %x, 1.0
+ %B = fmul float %x, %z
+ %C = select i1 %A, float %B, float %y
+ ret float %C
+}
More information about the llvm-commits
mailing list