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TheRock/compiler/amd-llvm/llvm/test/Transforms/InstCombine/icmp-equality-rotate.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

164 lines
6.2 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
declare i8 @llvm.fshl.i8(i8, i8, i8)
declare i8 @llvm.fshr.i8(i8, i8, i8)
declare void @use.i8(i8)
define i1 @cmpeq_rorr_to_rorl(i8 %x, i8 %C) {
; CHECK-LABEL: @cmpeq_rorr_to_rorl(
; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X]], [[TMP1]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C)
%r = icmp eq i8 %x_rorr, %x
ret i1 %r
}
define i1 @cmpeq_rorr_to_rorl_non_equality_fail(i8 %x, i8 %C) {
; CHECK-LABEL: @cmpeq_rorr_to_rorl_non_equality_fail(
; CHECK-NEXT: [[X_RORR:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[X_RORR]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C)
%r = icmp ult i8 %x_rorr, %x
ret i1 %r
}
define i1 @cmpeq_rorr_to_rorl_cmp_against_wrong_val_fail(i8 %x, i8 %C) {
; CHECK-LABEL: @cmpeq_rorr_to_rorl_cmp_against_wrong_val_fail(
; CHECK-NEXT: [[X_RORR:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[X_RORR]], [[C]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C)
%r = icmp ult i8 %x_rorr, %C
ret i1 %r
}
define i1 @cmpeq_rorr_to_rorl_non_ror_fail(i8 %x, i8 %C) {
; CHECK-LABEL: @cmpeq_rorr_to_rorl_non_ror_fail(
; CHECK-NEXT: [[X_RORR:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[C:%.*]], i8 [[C]])
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[X_RORR]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr = call i8 @llvm.fshr.i8(i8 %x, i8 %C, i8 %C)
%r = icmp ult i8 %x_rorr, %x
ret i1 %r
}
define i1 @cmpeq_rorr_to_rorl_multiuse_fail(i8 %x, i8 %C) {
; CHECK-LABEL: @cmpeq_rorr_to_rorl_multiuse_fail(
; CHECK-NEXT: [[X_RORR:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C:%.*]])
; CHECK-NEXT: call void @use.i8(i8 [[X_RORR]])
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X_RORR]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C)
call void @use.i8(i8 %x_rorr)
%r = icmp eq i8 %x_rorr, %x
ret i1 %r
}
define i1 @cmpne_rorr_rorr(i8 %x, i8 %C0, i8 %C1) {
; CHECK-LABEL: @cmpne_rorr_rorr(
; CHECK-NEXT: [[TMP1:%.*]] = sub i8 [[C0:%.*]], [[C1:%.*]]
; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 [[TMP1]])
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X]], [[TMP2]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr0 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C0)
%x_rorr1 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C1)
%r = icmp ne i8 %x_rorr0, %x_rorr1
ret i1 %r
}
define i1 @cmpne_rorrX_rorrY(i8 %x, i8 %y, i8 %C0, i8 %C1) {
; CHECK-LABEL: @cmpne_rorrX_rorrY(
; CHECK-NEXT: [[TMP1:%.*]] = sub i8 [[C0:%.*]], [[C1:%.*]]
; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[TMP1]])
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[Y:%.*]], [[TMP2]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr0 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C0)
%y_rorr1 = call i8 @llvm.fshr.i8(i8 %y, i8 %y, i8 %C1)
%r = icmp ne i8 %x_rorr0, %y_rorr1
ret i1 %r
}
define i1 @cmpne_rorr_rorr_non_equality_fail(i8 %x, i8 %C0, i8 %C1) {
; CHECK-LABEL: @cmpne_rorr_rorr_non_equality_fail(
; CHECK-NEXT: [[X_RORR0:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C0:%.*]])
; CHECK-NEXT: [[X_RORR1:%.*]] = call i8 @llvm.fshr.i8(i8 [[X]], i8 [[X]], i8 [[C1:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[X_RORR0]], [[X_RORR1]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr0 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C0)
%x_rorr1 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C1)
%r = icmp sge i8 %x_rorr0, %x_rorr1
ret i1 %r
}
define i1 @cmpne_rorr_rorl_todo_mismatch_C(i8 %x, i8 %C0, i8 %C1) {
; CHECK-LABEL: @cmpne_rorr_rorl_todo_mismatch_C(
; CHECK-NEXT: [[X_RORR0:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C0:%.*]])
; CHECK-NEXT: [[X_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X]], i8 [[X]], i8 3)
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X_RORR0]], [[X_RORL1]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorr0 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C0)
%x_rorl1 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 3)
%r = icmp ne i8 %x_rorr0, %x_rorl1
ret i1 %r
}
define i1 @cmpne_rorl_rorl_multiuse1_fail(i8 %x, i8 %C0) {
; CHECK-LABEL: @cmpne_rorl_rorl_multiuse1_fail(
; CHECK-NEXT: [[X_RORL0:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C0:%.*]])
; CHECK-NEXT: [[X_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X]], i8 [[X]], i8 3)
; CHECK-NEXT: call void @use.i8(i8 [[X_RORL1]])
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X_RORL0]], [[X_RORL1]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorl0 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 %C0)
%x_rorl1 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 3)
call void @use.i8(i8 %x_rorl1)
%r = icmp ne i8 %x_rorl0, %x_rorl1
ret i1 %r
}
define i1 @cmpeq_rorlXC_rorlYC_multiuse1(i8 %x, i8 %y) {
; CHECK-LABEL: @cmpeq_rorlXC_rorlYC_multiuse1(
; CHECK-NEXT: [[Y_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[Y:%.*]], i8 [[Y]], i8 3)
; CHECK-NEXT: call void @use.i8(i8 [[Y_RORL1]])
; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 3)
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[Y]], [[TMP1]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorl0 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 6)
%y_rorl1 = call i8 @llvm.fshl.i8(i8 %y, i8 %y, i8 3)
call void @use.i8(i8 %y_rorl1)
%r = icmp eq i8 %x_rorl0, %y_rorl1
ret i1 %r
}
define i1 @cmpeq_rorlC_rorlC_multiuse2_fail(i8 %x) {
; CHECK-LABEL: @cmpeq_rorlC_rorlC_multiuse2_fail(
; CHECK-NEXT: [[X_RORL0:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 6)
; CHECK-NEXT: [[X_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X]], i8 [[X]], i8 3)
; CHECK-NEXT: call void @use.i8(i8 [[X_RORL0]])
; CHECK-NEXT: call void @use.i8(i8 [[X_RORL1]])
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X_RORL0]], [[X_RORL1]]
; CHECK-NEXT: ret i1 [[R]]
;
%x_rorl0 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 6)
%x_rorl1 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 3)
call void @use.i8(i8 %x_rorl0)
call void @use.i8(i8 %x_rorl1)
%r = icmp eq i8 %x_rorl0, %x_rorl1
ret i1 %r
}
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